JP2002148330A - Interference unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a conventional interference unit that a transmitted disturbance radio wave is detected by an opponent, resulting reversely in exposure of self existence azimuth to the opponent side. SOLUTION: The disturbance radio wave is transmitted only to a spot where a radar to be disturbed exists by using plural synchronously-controlled transmission/reception circuit elements 8 and by utilizing convergence phenomenon of a wave by a time reversal wave. Hereby, the disturbance radio wave can be transmitted to the opponent, while concealing self existence from the opponent on the interference unit side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave jammer used in electronic warfare.

[0002]

2. Description of the Related Art Electronic warfare is a form of modern warfare using electromagnetic waves as a medium, and includes tactics concerning active use of radio waves by communication or radar, interception of radio waves used by opponents, Analysis and disturbance for the purpose of disrupting the other party
Refers to activities such as transmission of deceptive radio waves.

FIG. 5 shows the concept of operation of a radio wave jamming device mounted on an aircraft.

In FIG. 5, reference numeral 17 denotes an aircraft, and reference numeral 18 denotes a radio wave jammer mounted on the aircraft 17 for receiving, analyzing, azimuth detecting, and transmitting jamming radio waves. Reference numeral 19 denotes a jamming radio wave transmitted from the radio wave jamming device 18, and the transmission beam of the jamming radio wave 19 is directed in the direction of the incoming radio wave.

In FIG. 1, reference numeral 20 denotes a radar installed on the ground, and reference numeral 21 denotes a radio wave transmitted from the radar 20.

[0006] The radio wave jamming device 18 is provided with a radar transmission radio wave 21.
The RF signal having the same frequency as the received radar transmission radio wave 21 is amplified and transmitted to the radar 20 as a jamming radio wave 19 larger than its own echo.

As a result, the radar 20 cannot detect the target. However, at this time, the radar 20
Detects the presence of the jammer 19 and can remove the jammer 19 with a pulse Doppler filter, etc.
The radar 20 can detect the aircraft 17,
The jamming radio wave 19 becomes meaningless.

If there is a radio wave detecting device near the radar 20 that can receive the jamming radio waves 19 from the aircraft 17, the radar 20 can detect the presence of the aircraft 17 by detecting the jamming radio waves 19 before detecting the aircraft 17. Can be. From the viewpoint of the aircraft 17 side, the transmission of the jamming radio waves 19 to the radar 20 results in exposing the existence of the self to the other party, which may be disadvantageous in the operation. There were challenges.

A conventional radio wave jamming device will be described with reference to the drawings. FIG. 6 shows, for example, “the latest electronic warfare technology”
It is a figure which shows the structure of the conventional radio wave jamming device shown to (Keidanren and Defense Production Committee, June, 1993).

In FIG. 6, 1 is a receiving antenna, 2 is a receiver connected to the receiving antenna, 22 is a signal processor for processing a received signal, and 23 is a high-frequency signal based on frequency information output from the signal processor 22. An oscillator that oscillates a signal, 6
Is an amplifier for amplifying the high-frequency signal output from the oscillator 23,
Reference numeral 7 denotes a transmitting antenna connected to the amplifier 6.

Next, the operation of the conventional radio wave jamming device will be described with reference to the drawings.

In FIG. 6, a radar transmission radio wave arriving from space is input to a receiver 2 through a reception antenna 1. The receiver 2 detects a signal according to the tuning frequency and outputs the signal to the signal processor 22 as a received signal. The signal processor 22 detects pulse characteristics such as the frequency, pulse width, and pulse amplitude of the received radar transmission radio wave,
The detected radar 20 is specified by the detected radar pulse group.

The signal processor 22 transmits the interference transmission frequency information to the oscillator 23. Next, the oscillator 23
Oscillates a high-frequency signal of the indicated frequency,
Output to This amplified high-frequency signal is radiated from the transmitting antenna 7 into space as a jamming radio wave 19.

[0014]

In the conventional radio wave jammer as described above, the transmitted jammer 19 can be received anywhere as long as the transmitting antenna 7 is in the directional direction.
There is a problem in that the transmission of the jamming radio wave 19 also exposes the own direction to the other party.

The radar 20 of the transmitted jammer 19
The reception power on the side depends on the distance between the radar 20 and the radio wave jamming device, and when radio wave jamming is performed from a long distance, there is a problem that it is necessary to transmit the jamming radio wave 19 with higher output. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. By converging jamming radio waves only to the radar which is trying to jam, the jamming of the jamming radio waves by a radio wave detection device located near the radar is provided. It is an object of the present invention to obtain a radio wave jamming device that makes reception difficult and can keep its existence confidential.

Further, since the jamming radio waves converge only at the position of the radar to be jammed, the received power of the jamming radio waves on the radar side does not depend on the distance between the radar and the jamming device, and is high from a long distance. It is an object of the present invention to obtain a radio wave jamming device capable of interfering with a radio wave.

[0018]

According to a first aspect of the present invention, there is provided a radio wave jamming apparatus, comprising: a synchronization control means for outputting a synchronization signal; and a transmission radio wave from the same radar based on the synchronization signal from the synchronization control means. And a plurality of transmission / reception means for transmitting the radio waves in a concentrated manner at the position where the transmitting antenna of the radar is present by simultaneously receiving the signals and transmitting the inverted signals at the same time.

According to a second aspect of the present invention, there is provided the radio wave jamming apparatus, wherein the synchronization control means receives a GPS radio wave.
A GPS synchronization controller comprising an antenna, a GPS receiver, and a GPS synchronization signal generator for generating a synchronization signal based on a GPS signal, wherein the transmission / reception means receives a radio wave from a radar. An antenna, a receiver for tuned reception of a received radio wave, an A / D converter for converting a tuned analog signal into a digital signal, and a LIFO for storing a signal converted into a digital signal based on the synchronization signal in a post-reading prefetching manner A memory, a D / A converter for converting a digital signal read from the LIFO memory based on the synchronization signal into an analog signal, an amplifier for amplifying an analog signal output from the D / A converter, A transmission / reception circuit element including a transmission antenna for transmitting an analog signal as a radio wave.

According to a third aspect of the present invention, in the radio wave jamming device, the synchronization control means may receive a GPS radio wave.
A GPS synchronization controller comprising an antenna, a GPS receiver, and a GPS synchronization signal generator for generating a synchronization signal based on a GPS signal, wherein the transmission / reception means receives a radio wave from a radar. An antenna, a receiver for tuned reception of a received radio wave, an A / D converter for converting a tuned analog signal into a digital signal, and a LIFO for storing a signal converted into a digital signal based on the synchronization signal in a post-reading prefetching manner A memory, a D / A converter for converting a digital signal read from the LIFO memory into an analog signal based on the synchronization signal, an amplifier for amplifying an analog signal output from the D / A converter, and the receiving antenna And a directional coupler functioning as a transmission antenna for transmitting the amplified analog signal as radio waves. It is a signal circuit element.

According to a fourth aspect of the present invention, there is provided the radio wave jamming apparatus, wherein the synchronization control means includes a first receiving antenna for receiving a radio wave from a radar, an input detection circuit for detecting an input of a radar transmission radio wave, A synchronization signal generating circuit for generating a synchronization signal from the radar transmission radio wave, wherein the transmission / reception means comprises: a second receiving antenna for receiving a radio wave from the radar; A second receiver, an A / D converter that converts a tuned received analog signal into a digital signal, a LIFO memory that stores a signal converted into a digital signal based on the synchronization signal in a post-write look-ahead, A D / A converter for converting a digital signal read from the LIFO memory into an analog signal based on the signal, and an analog signal output from the D / A converter. An amplifier for amplifying the a transceiver circuit element is composed of a transmitting antenna for transmitting the analog signal amplified as a radio wave.

[0022]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 A radio wave jamming device according to Embodiment 1 of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a configuration of a radio wave jamming device according to Embodiment 1 of the present invention. In the drawings, the same reference numerals indicate the same or corresponding parts.

In FIG. 1, reference numeral 1 denotes a receiving antenna for capturing a radio wave transmitted from a radar, 2 a receiver for receiving a radio wave transmitted from a radar, and 3 an A / D converter for converting a received signal into a digital signal. Reference numeral 4 denotes a LIFO memory (storage means) for storing the digital signal in a post-reading / read-ahead manner;
A D / A converter for converting a digital signal read from the IFO memory into an analog signal, 6 is an amplifier for amplifying the analog signal output from the D / A converter 5, and 7 is a transmission for transmitting the amplified analog signal as jamming radio waves. An antenna 8 is a transmitting / receiving circuit element (transmitting / receiving means) composed of these circuits (receiving antenna 1 to transmitting antenna 7).

In the same figure, 9 is a GPS antenna for capturing GPS radio waves, 10 is a GPS receiver connected to the GPS antenna 9 to receive GPS radio waves, and 11 is a GPS receiver.
A GPS synchronizing signal generator for generating a synchronizing signal for synchronizing each transmitting / receiving circuit element 8 based on the signal received by the S receiver 10, and 12 these circuits (GPS antenna 9 to GPS synchronizing signal generating 11) GP composed of
It is an S synchronization controller (synchronization control means).

The radio wave jamming device according to the first embodiment includes:
A plurality of transmitting / receiving circuit elements 8 and a GP for controlling them synchronously
It is constituted by the S synchronization control circuit 12.

The radio wave jamming device according to the first embodiment includes:
A transmitting / receiving circuit element 8 which converts the received signal of the received radar transmission radio wave into a digital signal by the A / D converter 3, reverses the time using the LIFO memory 4, and converts the signal into an analog signal by the D / A converter 5. Are transmitted simultaneously from a plurality of places, and are simultaneously transmitted after being inverted in time, so that the interfering radio waves are converged to the position where the radar exists.

FIG. 2 is a diagram shown in an article of "Reverse acoustics" published in "Nikkei Science March 2000", which illustrates a convergence phenomenon due to a time-reversed wave of a wave. It is.

FIG. 2A shows the step of receiving a wave from a wave source. A plurality of transmitting / receiving elements are placed around the wave source, and the wave generated by the wave source is received by each transmitting / receiving element. The wave generated from the wave source propagates from the wave source toward the entire circumference and reaches each transmitting / receiving element. The wave arriving at each transmitting / receiving element is stored for each transmitting / receiving element. At this time, the time when each transmitting / receiving element stores the wave is the same for all the elements at the same time.

Next, the step of transmitting a wave from each transmitting / receiving element shown in FIG. 2B will be described. At the wave transmission stage, each transmitting / receiving element reads out the stored wave with time inversion, and simultaneously transmits the waves. As a result, the waves transmitted from the respective transmitting / receiving elements form the same wavefront as at the time of reception, and travel toward the wave source. The wave arriving at the wave source is phase-synthesized and has the maximum amplitude at the wave source. This is the convergence phenomenon due to the time-reversed wave of the wave.

The radio wave jamming device according to the first embodiment is
This principle is applied to radio waves, and a LIFO memory 4 is used to generate a time-reversed wave.
This LIFO memory 4 is a storage circuit for read-ahead and read-ahead,
Reading is performed sequentially from the last written data. Thereby, the stored wave can be inverted in time.

In addition, in order to simultaneously store and transmit the transmission / reception circuit elements 8, a synchronization signal is generated using radio waves from the GPS, and each transmission / reception circuit element 8 generates a synchronization signal based on the synchronization signal. Record and read. At this time, in order to match the phases of the radio waves in the microwave band, which is the radar transmission frequency band, each transmitting / receiving circuit element 8 needs to synchronize in a time of 0.1 ns or less. As a result, the interfering radio waves transmitted from the plurality of transmission / reception circuit elements 8 converge toward the transmission position of the radar, and become radio waves having the largest amplitude value at the radar existing position.

Next, the operation of the radio wave jammer according to the first embodiment will be described with reference to the drawings.

The radar transmission radio wave arriving from space reaches the reception antenna 1 of each transmission / reception circuit element 8. The arriving radar transmission radio wave is tuned and received by the receiver 2 and output to the A / D converter 3 as an analog reception signal. The A / D converter 3 converts an analog signal from the receiver 2 into a digital value and outputs the digital value to the LIFO memory 4.

On the other hand, the GP transmitted from the GPS satellite
The S radio wave is captured by the GPS antenna 9 and received by the GPS receiver 10. The GPS synchronization signal generator 11
A fixed synchronization pulse is generated based on the signal from S and output to the LIFO memory 4 of each transmitting / receiving circuit element 8. The LIFO memory 4 of each transmitting / receiving circuit element 8 records a digital signal from the A / D converter 3 in synchronization with a synchronization pulse from the GPS synchronization controller 12. This is the operation up to the stage of receiving the radar transmission signal.

Next, at the stage of transmitting jamming radio waves, the GP
The LIFO memory 4 of each transmission / reception circuit element 8 reads the digital signals recorded simultaneously and outputs them to the D / A converter 5 in response to the synchronization pulse from the S synchronization controller 12. The D / A converter 5 converts a digital signal output from the LIFO memory 4 into an analog signal and outputs the analog signal to the amplifier 6. The analog signal at this time becomes a time reversal wave of the received radar transmission radio wave. The time reversal wave of the radar transmission radio wave output from the LIFO memory 4 is amplified by the amplifier 6 and transmitted from the transmission antenna 7 as a radio wave.

That is, the radio wave jamming apparatus according to the first embodiment includes a receiving antenna 1 for receiving a radio wave, and a receiver 2 for tuned reception of a transmission wave transmitted from a disturbing radar or the like among the received radio waves. An A / D converter 3 for converting a tuned received analog signal into a digital signal, and an L / L for storing the signal converted into a digital signal in a post-reading look-ahead.
An IFO memory 4; a D / A converter 5 for converting a digital signal read from the LIFO memory 4 into an analog signal; an amplifier 6 for amplifying an analog signal output from the D / A converter 5; A plurality of transmission / reception circuit elements 8 comprising a transmission antenna 7 for transmitting analog signals as radio waves, a GPS antenna 9 for receiving GPS radio waves, a GPS receiver 10, and a synchronization signal based on the GPS signals. And a GPS synchronization controller 12 comprising a GPS synchronization signal generator 11 for transmitting and receiving the transmission radio waves from the same radar at the same time.
By inverting the time and transmitting the waves at the same time, the radio waves are transmitted in a concentrated manner at the position where the transmitting antenna of the radar exists, utilizing the convergence phenomenon of the time-reversed wave.

According to the first embodiment, due to the convergence phenomenon due to the time-reversed wave of the wave, the jamming radio wave from the radio wave jamming device converges to the radiation source of the transmission radio wave, that is, the position where the radar exists. The combined amplitude becomes the maximum amplitude. As a result, the jamming radio wave arrives only at the radar to be jammed, and the jamming radio wave cannot be received at other points. As a result, the radio wave jamming device can transmit jamming radio waves to the other party while concealing its own existence from the other party.

Embodiment 2 Embodiment 2 An electric wave jamming device according to Embodiment 2 of the present invention will be described with reference to the drawings. FIG. 3 is a diagram showing a configuration of a radio wave jamming device according to Embodiment 2 of the present invention.

Referring to FIG.
The configuration up to the synchronization controller 12 is the same as that of FIG. However, the transmitting antenna 7 shown in FIG. 1 is not used because it is shared with the receiving antenna 1. Therefore, a directional coupler 13 is inserted to couple the reception signal line and the transmission signal line.

Next, the operation of the radio interference apparatus according to the second embodiment will be described with reference to the drawings.

The operation of the radio wave jamming device according to the second embodiment is such that the jamming wave transmission path is transmitted from the same antenna as the receiving antenna 1 via the directional coupler 13 after outputting the amplifier 6. The operation is the same as that of the first embodiment.

The radio wave jamming device according to the second embodiment includes:
In the radio wave jamming device of the first embodiment, the reception signal line and the transmission signal line are connected by the directional coupler 13 in order to share the reception antenna and the transmission antenna of the transmission / reception circuit element (transmission / reception means) 8A. Things. In the radio wave jamming device of the first embodiment, since the transmitting antenna 7 and the receiving antenna 1 are separated, to make the transmitted jamming radio waves converge on the radar side, the radar uses the receiving antenna 1 of each transmitting / receiving circuit element 8. And the distance from the transmitting antenna 7 of each transmitting / receiving circuit element 8 to the radar must be the same. In the radio wave jamming device according to the second embodiment, since the receiving antenna and the transmitting antenna 1 of each transmitting / receiving circuit element 8A are the same, this problem is solved, and how the transmitting / receiving circuit elements 8A are arranged. Even so, it becomes possible to converge the jamming radio wave on the radar side.

That is, in the radio wave jamming device according to the second embodiment, the reception signal line and the transmission signal line are connected by the directional coupler 13, and the transmission and reception antennas are shared.

According to the second embodiment, in addition to the effect of the radio wave jamming device of the first embodiment, the transmitting and receiving circuit elements 8 on the jamming device side are used in the radio wave jamming device of the first embodiment.
Although the transmission antenna 7 and the reception antenna 1 must be arranged so that the distance from the radar is the same, each transmission / reception circuit element 8A can be arbitrarily arranged.

Embodiment 3 Third Embodiment A radio wave jamming device according to a third embodiment of the present invention will be described with reference to the drawings. FIG. 4 is a diagram showing a configuration of a radio wave jamming device according to Embodiment 3 of the present invention.

In FIG. 4, the components from the transmitting antenna 1 to the transmitting / receiving circuit element 8 are the same as those in FIG. However, instead of the GPS synchronization controller 12 shown in FIG.
4, a synchronization controller (synchronization control means) 18 composed of a receiver 15, an input detection circuit 16, and a synchronization signal generation circuit 17.

Next, the operation of the radio wave jamming device according to the third embodiment will be described with reference to the drawings.

In the radio wave jamming device according to the third embodiment, a radar transmission pulse is used to synchronize the reading and writing operations of the LIFO memory 4 in each transmitting and receiving circuit element 8.

The transmission wave of the radar is transmitted to each transmission / reception circuit element 8.
And the receiving antenna 1 of the synchronization controller 18
4 and the receiver 15. The input detection circuit 16
It is determined whether or not a radar transmission pulse has been received, and a signal is output to the synchronization signal generation circuit 17 when it is received.
The synchronization signal generation circuit 17 generates a constant synchronization pulse by using a signal output from the input detection circuit 16 as a trigger.
It outputs to the LIFO memory 4 in each transmitting / receiving circuit element 8 as a synchronization signal.

In addition to the above operation, the operations at the stage of receiving the radar transmission signal and the stage of transmitting the jamming radio wave are the same as those of the first embodiment.

The radio wave jamming device according to the third embodiment includes:
In the radio wave jamming device of the first embodiment, in order to synchronize the transmission / reception circuit elements 8, the control is performed not by using the GPS radio wave but by the input timing of the transmission pulse from the radar. Radar transmission radio receiving antenna 1
4, a receiver 15, an input detection circuit 16 for detecting the input of a radar transmission pulse, and a synchronization controller 18 having a synchronization signal generation circuit 17 for generating a synchronization signal in accordance with the timing of the detected input pulse. The read / write operation of the element 8 is controlled.

The radar transmission radio waves are usually pulse-modulated and transmitted. When performing synchronous control using GPS radio waves, there is a problem that the input timing of the transmission pulse from the radar cannot be recognized, and a long time until the transmission pulse is input needs to be stored. Was. In the radio wave jamming device according to the third embodiment, each transmission / reception circuit element 8 can store a waveform in synchronization with a radar transmission pulse, so that a radar transmission radio wave can be stored with a minimum storage capacity. .

That is, the radio wave jamming device according to the third embodiment is different from the GPS synchronization controller 12 in that the receiving antenna 14, the receiver 15, and the input detection circuit 16 for detecting the input of the radar transmission radio wave are used. And a synchronization controller 18 comprising a synchronization signal generation circuit 17 for generating a synchronization signal from the received radar transmission radio waves.

According to the third embodiment, in addition to the effect of the first embodiment, the capacity of the LIFO memory 4 can be suppressed to a necessary minimum corresponding to the pulse width time during which the radar is transmitting.

[0055]

As described above, the radio wave jamming device according to the first aspect of the present invention has a synchronization control means for outputting a synchronization signal and a transmission from the same radar based on the synchronization signal from the synchronization control means. A plurality of transmission / reception means for simultaneously receiving radio waves, inverting the time, and transmitting the radio waves at the same time and transmitting the radio waves in a concentrated manner at the position where the transmitting antenna of the radar is present. It is possible to transmit jamming radio waves to the other party while concealing the presence of the other party from the other party.

According to a second aspect of the present invention, as described above, the synchronization control means includes a GPS
A GPS antenna for receiving radio waves, a GPS receiver,
A GPS synchronization controller comprising a GPS synchronization signal generator for generating a synchronization signal based on a PS signal, wherein the transmission / reception means includes: a receiving antenna for receiving a radio wave from a radar; , A digital-to-analog (A / D) converter that converts a tuned received analog signal into a digital signal, a LIFO memory that stores a signal converted into a digital signal based on the synchronization signal in a post-reading / read-ahead manner, A D / A converter for converting a digital signal read from the LIFO memory into an analog signal, an amplifier for amplifying an analog signal output from the D / A converter, and a transmission for transmitting the amplified analog signal as radio waves. Since it is a transmitting and receiving circuit element composed of an antenna, the jamming device side keeps its existence secret from the An effect that it is possible to transmit the jamming.

According to a third aspect of the present invention, as described above, the synchronization control means includes a GPS control unit.
A GPS antenna for receiving radio waves, a GPS receiver,
A GPS synchronization controller comprising a GPS synchronization signal generator for generating a synchronization signal based on a PS signal, wherein the transmission / reception means includes: a receiving antenna for receiving a radio wave from a radar; , A digital-to-analog (A / D) converter that converts a tuned received analog signal into a digital signal, a LIFO memory that stores a signal converted into a digital signal based on the synchronization signal in a post-reading / read-ahead manner, A D / A converter for converting a digital signal read from the LIFO memory into an analog signal, an amplifier for amplifying an analog signal output from the D / A converter, and a receiving antenna for converting the amplified analog signal into an analog signal. Since it is a transmitting and receiving circuit element composed of a directional coupler functioning as a transmitting antenna for transmitting as radio waves, An effect that it is possible to arbitrarily arrange the circuit elements.

According to a fourth aspect of the present invention, as described above, the synchronization control means includes a first receiving antenna for receiving a radio wave from a radar, and an input for detecting an input of a radar transmission radio wave. A synchronization controller comprising a detection circuit and a synchronization signal generation circuit for generating a synchronization signal from a received radar transmission radio wave, wherein the transmission / reception means receives a radio wave from a radar; A second receiver for tuned reception of a received radio wave, an A / D converter for converting an tuned analog signal into a digital signal, and a LIFO for storing a signal converted into a digital signal based on the synchronization signal in a post-reading / read-ahead manner A memory, a D / A converter for converting a digital signal read from the LIFO memory into an analog signal based on the synchronization signal, and the D / A converter Since the transmitting and receiving circuit element is constituted by an amplifier for amplifying an analog signal to be output and a transmitting antenna for transmitting the amplified analog signal as radio waves, the capacity of the LIFO memory is increased by the pulse width time during which the radar is transmitting. This has the effect that only the necessary minimum can be suppressed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a radio wave jamming device according to Embodiment 1 of the present invention.

FIG. 2 is a diagram illustrating an operation principle of the radio wave jamming device according to each embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a radio wave jamming device according to Embodiment 2 of the present invention.

FIG. 4 is a diagram showing a configuration of a radio wave jamming device according to Embodiment 3 of the present invention.

FIG. 5 is a diagram showing an operation concept of an electronic warfare using a conventional radio wave jamming device.

FIG. 6 is a diagram showing a configuration of a conventional radio wave jamming device.

[Explanation of symbols]

1 receiving antenna, 2 receiver, 3 A / D converter, 4
LIFO memory, 5D / A converter, 6 amplifier, 7
Transmitting antenna, 8, 8A transmitting and receiving circuit element, 9 GPS
Receiving antenna, 10 GPS receiver, 11 GPS synchronization signal generator, 12 GPS synchronization controller, 13 directional coupler, 14 reception antenna, 15 receiver, 16 input detection circuit, 17 synchronization signal generation circuit, 18 synchronization controller .

Claims (4)

[Claims] 1. A synchronous control means for outputting a synchronous signal, and simultaneously receiving transmission radio waves from the same radar based on the synchronous signal from the synchronous control means, inverting the radio waves and transmitting them simultaneously, A radio wave jammer comprising: a plurality of transmission / reception means for transmitting radio waves concentratedly at a position where a transmission antenna of the radar exists. 2. The GPS synchronization control means, comprising: a GPS antenna for receiving a GPS radio wave, a GPS receiver, and a GPS synchronization signal generator for generating a synchronization signal based on a GPS signal. A transmitting / receiving means for receiving a radio wave from a radar, a receiver for tuned reception of the received radio wave, an A / D converter for converting a tuned received analog signal to a digital signal, A LIFO memory that stores a signal converted into a digital signal based on the signal in a post-write read-ahead, a D / A converter that converts a digital signal read from the LIFO memory based on the synchronization signal into an analog signal, Consists of an amplifier that amplifies the analog signal output from the A-converter, and a transmitting antenna that transmits the amplified analog signal as radio waves Jamming device according to claim 1, characterized in that the transmitting and receiving circuit elements are. 3. The GPS synchronization control means comprises a GPS antenna for receiving a GPS radio wave, a GPS receiver, and a GPS synchronization signal generator for generating a synchronization signal based on a GPS signal. A transmitting / receiving means for receiving a radio wave from a radar, a receiver for tuned reception of the received radio wave, an A / D converter for converting a tuned received analog signal to a digital signal, A LIFO memory that stores a signal converted into a digital signal based on the signal in a post-write read-ahead, a D / A converter that converts a digital signal read from the LIFO memory based on the synchronization signal into an analog signal, An amplifier for amplifying the analog signal output from the A-converter; and a transmitting unit for transmitting the amplified analog signal as radio waves. Jamming device according to claim 1, characterized in that the transmitting and receiving circuit elements is composed of a directional coupler which functions as an antenna. 4. The synchronization control means includes: a first reception antenna for receiving a radio wave from a radar; an input detection circuit for detecting an input of a radar transmission radio wave; and a synchronization for generating a synchronization signal from the received radar transmission radio wave. A synchronization controller comprising a signal generation circuit, wherein the transmission / reception means receives a radio wave from a radar, a second receiver tunes the reception radio wave, and a tuned reception. An A / D converter for converting an analog signal into a digital signal, and a LIFO for storing a signal converted into a digital signal based on the synchronization signal in a post-reading / read-ahead manner
A memory, a D / A converter for converting a digital signal read from the LIFO memory based on the synchronization signal into an analog signal, an amplifier for amplifying an analog signal output from the D / A converter, The radio wave jamming device according to claim 1, wherein the radio wave jamming device is a transmission / reception circuit element including a transmission antenna for transmitting an analog signal as a radio wave.