RU2543061C1 - Broadcast and public announcement system using navigation satellites - Google Patents

Abstract

FIELD: radio engineering, communication.

SUBSTANCE: broadcast and public announcement system using navigation satellites, comprising a broadcast centre and a unit for generating emergency information, connected through a generating unit with a transmitting ground-based satellite station, at a geostationary satellite - a unit for receiving ground signals, connected to an intersatellite communication unit, at navigation satellites - series-connected intersatellite communication receiving equipment, a unit for converting a signal into an L-range signal and a transmitting unit. A user receiving device is connected through a broadcast signal demodulating unit with a sound reproducing unit and through a warning signal demodulating unit with an emergency display unit.

EFFECT: facilitating broadcast and public announcement on emergency situations at any point on the Earth.

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Description

The invention relates to satellite communications and navigation systems and can be used to transmit broadcasting and emergency signals in emergency areas not covered by GPRS.

The prior art automobile data exchange system (US 2005/0134504 A1, G01S 1/00, 06/23/2005), installed in a vehicle and comprising a telephone module, configured to enable a telephone user to establish a telephone connection using a telephone located in the vehicle, an operator’s external telephone with the possibility of transmitting voice messages to it and with the possibility of receiving voice commands from it with ensuring their sound reproduction through the speaker of the car user’s telephone. An automobile data exchange system comprises a GPS module configured to interact with GPS satellites to generate vehicle position data and transmit them to an operator. A disadvantage of the US 2005/0134504 automotive data exchange system is the limited information that can be transmitted to the operator.

The closest analogue of the present invention is a system comprising connected by a cellular mobile network, for example, a GSM network, subscriber complexes TC, response complexes and a dispatch center. The subscriber complex includes a security and anti-theft subsystem with a central control unit connected to the ignition unit, as well as a radio beacon covertly mounted on a TC, the activation input of which is connected to the first output of the central control unit, a mobile cellular subscriber terminal connected to a switching unit made with the ability to exchange signals with the central control unit of the anti-theft alarm subsystem, and a satellite navigation unit, for example a GPS receiver, connected to the switching unit. The response complex includes an object terminal for cellular mobile communication. The dispatch center includes a central mobile cellular communications terminal, the input of which is connected to the operator’s workstation. A relay unit has been introduced into the subscriber complex, configured to receive signals from radio beacons of subscriber complexes of other TCs and connected to the corresponding output and input of the switching unit. The beacon is configured to provide radiation modes, covering the initial notification of an attempt to unauthorized use of TC, confirmation of the fact of theft and direction finding by TC response complexes. The proposed system is simpler than the known ones, but it provides the ability to search and track TC in the conditions of the use by hackers of interference capable of neutralizing standard cellular mobile communication systems and satellite navigation systems. Along with the cellular mobile network, noise-protected redundant radio channels are used that do not require the deployment of a fixed base station network on the ground (RU 2349472 C1, ALTONIKA LLC, March 20, 2009).

A disadvantage of the known system is the inability to cover the entire territory, even Russia.

The technical result is the ability to alert the public about emergencies anywhere in the world.

To achieve this result, a broadcasting and public warning system using navigation satellites is proposed that includes a broadcasting center and an emergency information generation unit connected via a formation unit to a transmitting ground-based satellite station; on a geostationary satellite, a ground-based signal receiving unit connected to inter-satellite communication unit, on navigation satellites - inter-satellite receiving equipment connected in series, conversion unit I have a signal in the L-band and the transmitting node, while the receiving device of the users is connected through the demodulating unit of the broadcast signals to the audio unit and through the demodulating unit of the warning signals with the emergency indication unit.

Figure 1 shows the structural diagram of a broadcasting and public warning system using navigation satellites.

A broadcasting and public warning system using navigation satellites contains: a broadcasting center 1, broadcasting equipment 2 of the Ministry of Emergencies, signal conditioning equipment 3, where a digital signal of a certain standard is formed, transmitting equipment of a satellite station 4, where the signal is modulated by frequencies for transmission to a geostationary satellite 5. The geostationary satellite 5 contains in turn: receiving equipment of the geostationary satellite 6, transmitting equipment 7 of the geostationary satellite 5 d I inter-satellite communications, where the signal is modulated frequencies for inter-satellite stations. Navigation satellites 8 contain receiving equipment 9 inter-satellite communications, equipment for converting and generating a signal 10 in the L-band, transmitting equipment 11 of the navigation satellite. The user’s ground equipment comprises: a user’s receiver 12 (for example: a smartphone, a navigator in the car, etc.), broadcast signal addition and demodulation equipment 13, warning signals addition and demodulation equipment 14, internal or external sound reproducing equipment 15, and a receiver screen 16.

The broadcasting and public warning system using navigation satellites works as follows: signals from the broadcasting center 1 and from the broadcasting equipment 2 of the Ministry of Emergencies arrive at signal conditioning equipment 3 and are transmitted to the transmitting equipment of satellite station 4.

The signal from the transmitting equipment of the ground-based satellite station 4 is fed to the receiving equipment 6 of the geostationary satellite 5 and then to the transmitting equipment 7 of the geostationary satellite 5.

The signal from the transmitting equipment 7 of the geostationary satellite 5 is fed to the receiving equipment 9 of the navigation satellites 8, then it is fed to the equipment for converting and generating the signal 10 into the L-band, and then it is transmitted to the transmitting equipment 11 of the navigation satellites 8.

The signal from the navigation satellites 8 is supplied to the receiving device of users 12, for example: a smartphone, a navigator in the car, etc., and is fed to the addition and demodulation equipment 13 of the broadcast signal and to the addition and demodulation equipment 14 of the warning signals. From the addition and demodulation equipment 13, the signal enters the internal or external sound reproducing equipment 15. The signal from the addition and demodulation equipment 14 enters the screen of the receiving device 16 with the simultaneous supply of an audible warning sound.

Claims (1)

A broadcasting and public warning system using navigation satellites, comprising a broadcasting center and an emergency information generation unit connected via a formation unit to a transmitting ground-based satellite station; on a geostationary satellite, a ground-based signal receiving unit connected to an inter-satellite communication unit, navigation satellites - inter-satellite receiving equipment connected in series, signal to signal conversion unit - L - band and transmitting unit, At the same time, the user receiving device is connected through the demodulating unit of broadcast signals to the audio unit and through the demodulating unit of warning signals with the emergency indication unit.