异步应答激光测距技术

异步应答激光测距可实现卫星距离及星地时差测量.本文给出的主波时差公式与经典公式,以及一种拟工程实现、且与异步应答激光测距原理相同的无线电测距方法给出的工程应用公式不同.为了探求正确的主波时差公式,掌握这种测距体制的测距精度,进而验证异步应答激光测距体制的工程可行性,本文设计并开展了异步应答激光测距技术验证实验,利用两个地面测距终端对卫星反射测距模拟了星地异步应答激光测距过程.该实验是我国对异步应答激光测距体制的首次实践.实验研究结果表明,异步应答激光测距可用于两终端之间距离和主波时差的精确测量,且本文给出的主波时差公式正确,经典公式与应用公式存在不妥之处.

The Technology of Asynchronous Laser Transponder

The asynchronous laser transponder can greatly enhance the functional distance of the satellite laser ranging. The formulae are deduced for the delay between the laser departure from the two terminals(the clock offset),the range between the dual stations,and the measuring time for the range.The formula of the clock offset is different from the classical formula and the practical formula applied in radio ranging.In order to get the correct formula of the clock offset, achieve the ranging error and verify the engineering feasibility,we designed and carried out the verifying experiment for asynchronous laser transponder.This experiment is also the first application of the new method of asynchronous laser transponder in our country.The experimental result shows that the asynchronous laser transponder system is feasible, which proves that our formula for the clock offset is correct.The accuracy of the new method locates the accuracy of reflex ranging of both terminals.