Signal echo rate real-time controllable satellite laser ranging system, method and device

A satellite laser ranging and control system technology, which is applied in the field of satellite laser ranging systems, can solve problems such as damage and permanent interference of spaceborne detectors, reduce time jitter and drift errors, improve stability and effectively performance and improve system accuracy

Pending Publication Date: 2019-08-02
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

It has been pointed out in literature that high-power repetition-frequency second-pulse laser light is likely to cause effective interference and permanent damage to spaceborne detectors.

Method used

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  • Signal echo rate real-time controllable satellite laser ranging system, method and device
  • Signal echo rate real-time controllable satellite laser ranging system, method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Such as figure 1 As shown, a satellite laser ranging system with real-time controllable signal echo rate, said system also includes: laser 1, laser energy control system 12, echo signal comprehensive simulation system 2, transmitting telescope 8, main wave sampling circuit 13. Counter 4, receiving telescope 9, main wave sampling circuit 13 and counter 4; the laser 1 is used to generate light pulses, connected with the laser energy control system 12, and the light pulses produced will enter the laser energy control system In 12; Described laser energy control system 12 is respectively connected with echo signal comprehensive simulation system 2, transmitting telescope 8 and main wave sampling circuit 13; Described main wave sampling circuit 13 is connected with described counter 4; Described counter 4 is connected with described counter 4 The receiving telescope 9 is connected.

[0039] Specifically: the laser 1 is used to generate ultra-short laser pulses with a certai...

Embodiment 2

[0055] A satellite laser ranging method with real-time controllable signal echo rate, said method performs the following steps:

[0056] Step S1: a step of generating light pulses and automatically controlling the power of the generated light pulses;

[0057] Step S2: the step of transmitting and receiving the generated light pulse, measuring the time parameters of the light pulses emitted and received, and using the measured time parameters to perform laser ranging.

[0058] Further, the step S1: generating light pulses, and the steps of automatically controlling the power of the generated light pulses include:

[0059] Step S1.1: use the laser 1 to generate light pulses; make the light pulses enter the laser energy control system 12 through the guiding light path 11;

[0060] Step S1.2: Use the echo signal comprehensive simulation system 2 to estimate the average number of photons received by the satellite laser ranging system in real time according to the current observati...

Embodiment 3

[0068] A satellite laser ranging device with real-time controllable signal echo rate, the device includes: a non-transitory host computer 7 readable storage medium, the storage medium stores calculation instructions, which includes: generating optical pulses, And the code segment that automatically controls the power of the generated optical pulse; transmits and receives the generated optical pulse, measures the time parameters of the emitted and received optical pulses, and uses the measured time parameters to perform laser ranging.

[0069] In the prior art, the following three technologies are generally used for laser ranging:

[0070] (1) In order to reduce the impact of time jitter on the quality of observed data, a circuit is generally used to compensate for the time wander of SPAD (C-SPAD). The discriminator adopts a dual-level working mode, and for a pulse with a smaller intensity, the rise time of the output pulse is longer, so the difference between the two times when ...

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Abstract

The invention belongs to the technical field of the laser ranging, and specifically relates to signal echo rate real-time controllable satellite laser ranging system, method and device. The system further comprises a laser device, a laser energy control system, an echo signal comprehensive simulation system, an transmitter-telescope, a dominant wave sampling circuit, a counter, a receiving telescope, a dominant wave sampling circuit and the counter; the laser device is used for producing light pulse and connected with the laser energy control system; the produced light pulse enters the laserenergy control system; the laser energy control system is connected with each of the echo signal comprehensive simulation system, the transmitter telescope and the dominant wave sampling circuit; thedominant sampling circuit is connected with the counter; and the counter is connected with the receiver telescope. The system precision is improved, and the system stability and effectiveness are improved.

Description

technical field [0001] The invention belongs to the technical field of laser ranging, and in particular relates to a satellite laser ranging system, method and device with real-time controllable signal echo rate. Background technique [0002] As one of the technologies with the highest measurement accuracy in the current space geodetic technology, satellite laser ranging (SLR) technology is a comprehensive technology, covering laser, electronics, low-light detection, automatic control, precision optical machinery, astronomical measurement and satellite orbit It is of great significance to the monitoring of continental plate movement, crustal deformation, earth rotation and pole shift, and earth and ocean tidal changes. With the rapid development of optoelectronic devices and the continuous growth of application requirements, SLR technology with the characteristics of high precision, large range, high repetition frequency, long-distance measurement and day and night observabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S17/02G01S7/481G01S7/48
CPCG01S17/08G01S7/481G01S7/4802G01S17/86
Inventor 安宁
Owner 中国科学院国家天文台长春人造卫星观测站
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