JPS5786071A - Laser distance measuring device - Google Patents
Laser distance measuring deviceInfo
- Publication number
- JPS5786071A JPS5786071A JP55161661A JP16166180A JPS5786071A JP S5786071 A JPS5786071 A JP S5786071A JP 55161661 A JP55161661 A JP 55161661A JP 16166180 A JP16166180 A JP 16166180A JP S5786071 A JPS5786071 A JP S5786071A
- Authority
- JP
- Japan
- Prior art keywords
- laser light
- target object
- light
- mixed
- measuring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001514 detection method Methods 0.000 abstract 3
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Radar Systems Or Details Thereof (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
PURPOSE:To detect the moving speed of a target object instantaneously by mixing local laser light and the reflected laser light from a target object, performing heterodyne detection and frequency analysis and detecting a Doppler shift signal. CONSTITUTION:The laser light from a laser oscillator 21 is chirp-modulated with a moculator 24 and is projected to a target object 28. The reflected light thereof and the laser light from a laser oscillator 21 are mixed with the local laser light frequency shifted with a frequency shifter 30, and the mixed light is subjected to heterodyne detection with a photodetector 38. The output of the photodetector 38 is compressed with a pulse compressor 39, after which it is applied to a distance measuring device 35. On the other hand, the local laser light from the frequency shifter 30 and the laser light chirp-modulated with the modulator 24 are mixed, and the mixed light is subjected to heterodyne detection with a photodetector 33. After the output thereof is compressed with a pulse compressor 34, it is applied to a distance measuring device 35. The device 35 measures the time intervals of both inputs, and displays the distance up to the target object 28 in a display device 41.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55161661A JPS5786071A (en) | 1980-11-17 | 1980-11-17 | Laser distance measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55161661A JPS5786071A (en) | 1980-11-17 | 1980-11-17 | Laser distance measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5786071A true JPS5786071A (en) | 1982-05-28 |
Family
ID=15739422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55161661A Pending JPS5786071A (en) | 1980-11-17 | 1980-11-17 | Laser distance measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5786071A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019151059A1 (en) * | 2018-02-05 | 2019-08-08 | 日本電気株式会社 | Image processing device, range finding device, imaging device, image processing method, and storage medium |
| WO2020261391A1 (en) * | 2019-06-25 | 2020-12-30 | 三菱電機株式会社 | Signal processing device, signal processing method, and radar device |
-
1980
- 1980-11-17 JP JP55161661A patent/JPS5786071A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019151059A1 (en) * | 2018-02-05 | 2019-08-08 | 日本電気株式会社 | Image processing device, range finding device, imaging device, image processing method, and storage medium |
| JP2019135446A (en) * | 2018-02-05 | 2019-08-15 | 日本電気株式会社 | Image processing device, distance measurement device, imaging device, image processing method and program |
| WO2020261391A1 (en) * | 2019-06-25 | 2020-12-30 | 三菱電機株式会社 | Signal processing device, signal processing method, and radar device |
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