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Delay value real-time validation system, method and device of laser ranging system

A technology of laser distance measurement and delay value, which is applied in the direction of measuring devices, radio wave measurement systems, electromagnetic wave re-radiation, etc., can solve problems affecting system performance, long time for aiming, uncertain installation and debugging, aiming and maintenance, etc. , to achieve the effect of high repetition frequency of delay value

Pending Publication Date: 2019-09-27
中国科学院国家天文台长春人造卫星观测站
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the existing ground target measurement technology, we cannot standardize the system delay value of each circle, and can only measure before and after satellite observation or at fixed intervals, so that a large amount of observation data only corresponds to one SLR system delay value, This seriously affects the quality of observation data and ranging accuracy
[0048] 3. Both the near-earth target and the far-earth target are set at a certain distance from the system, and there are many uncertain factors in installation, commissioning, aiming and maintenance
Especially for remote targets, it takes a long time to place and aim at the target, which increases the switching time between the satellite and the ground target, reduces the working efficiency of the system, and affects the system performance.
[0049] 4. The existing ground target measurement technology is limited by working conditions such as weather, daytime, and night, and the experiment, adjustment, and maintenance of the entire system instrument are more difficult

Method used

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  • Delay value real-time validation system, method and device of laser ranging system
  • Delay value real-time validation system, method and device of laser ranging system
  • Delay value real-time validation system, method and device of laser ranging system

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Experimental program
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Effect test

Embodiment 1

[0076] Such as Figure 5 , Image 6 , Figure 7 with Figure 8 As shown, a delay value real-time standard effect system of a laser ranging system, the system also includes: a laser, an optical pulse beam expander system, a main wave sampling circuit, a folding axis optical path group, a guiding optical path group, and an optical retroreflection device , a photodetector, a time interval counter, a transmitting telescope, a receiving telescope and a clock; the laser is used to transmit light pulses; the light pulses are sampled by the main wave after being expanded by the light pulse beam expander system The circuit forms two electrical pulses, one of which is the main wave pulse, which is used to start the time interval counter; the other is used to sample from the clock and record the laser emission time T mian-pulse ; After the remaining emitted light enters the folded axis optical path group, it is emitted from the emitting telescope to the observation target; the optical...

Embodiment 2

[0092] On the basis of the previous embodiment, the receiving telescope includes: a photodetector, a secondary mirror, a meniscus beam splitter, a 458 reflector, a low-light TV camera, an altitude encoder, a reversible mirror, an eyepiece and a primary mirror The photodetector is arranged on the outside of the auxiliary mirror; the meniscus beam splitter is arranged on the inside of the auxiliary mirror; the height encoder is connected to the signal of the low-light TV camera; the low-light TV camera is set There are reversible mirrors and eyepieces; the primary mirror is set behind the 458 mirror.

Embodiment 3

[0094] On the basis of the previous embodiment, the transmitting telescope includes: an optical reverse transmitting device, a height torque motor and a speed measuring machine, a 458 dielectric film full-reflection mirror, an azimuth encoder, and a folded axis optical path group; The transmitting device is connected with the receiving telescope; the 458 dielectric film total reflection mirror is respectively connected with the height moment motor, the speed measuring machine and the azimuth encoder; the anti-counterfeiting encoder is connected with the folding axis optical path group.

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Abstract

The invention belongs to the technical field of laser ranging, and particularly relates to a delay value real-time validation system, method and device of a laser ranging system. The system includes: a laser, an optical pulse beam expanding system, a main wave sampling circuit, a broken axis optical path group, a guide optical path group, an optical reverse reflection device, a photoelectric detector, a time interval counter, a transmitting telescope, a receiving telescope and a clock. The real-time performance and accuracy of the delay valiation of the system are improved, and the delay value real-time validation system, method and device have the very important significance for improving the quality of the observed data and improving the accuracy of the observed data.

Description

technical field [0001] The invention belongs to the technical field of laser ranging, and in particular relates to a real-time standard effect system, method and device for a delay value of a laser ranging system. Background technique [0002] The space detection technology realized by the laser ranging system is a multidisciplinary comprehensive technology combined with laser, photoelectric detection, automatic control, electronic communication, astronomical measurement, satellite orbit and other technologies. The laser ranging system based on the principle of pulse time-of-flight (TOF) measurement indirectly calculates the flight distance by accurately measuring the round-trip flight time of the laser pulse signal from the ground station to the observation target. Different from other geospatial measurement technologies, the laser ranging system uses a high repetition frequency, high peak power, and narrow pulse laser, which solves a series of problems such as low ranging ...

Claims

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Application Information

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IPC IPC(8): G01S17/08G01S17/87G01S7/481
CPCG01S17/08G01S17/87G01S7/481
Inventor 安宁
Owner 中国科学院国家天文台长春人造卫星观测站