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Influence of Range Gate Width on Detection Probability and ranging accuracy of Single Photon Laser Altimetry Satellite

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Journal of Geodesy and Geoinformation Science 2020年第2期3卷 36-44页

作者： Guoyuan LI Fanghong YE Xinming TANG Dongping XIE Jiapeng HUANG Genhua HUANG Land Satellite Remote Sensing Application Center Ministry of Natural ResourcesBeijing 100048China School of Resource and Environmental Sciences Wuhan UniversityWuhan 430079China Key Laboratory of Space Active Opto-electronics Technology Chinese Academy of SciencesShanghai 200038China

The influence of the single photon laser altimeter range-gate width on the detection probability and ranging accuracy is discussed and analyzed,according to the LiDAR equation,single photon detection equation and the Monte Carlo method to simulate the *** simulated results show that the probability of detection is not affected by the range gate,while the probability of false alarm is relative to the gate *** the gate width is 100 ns,the ranging accuracy can accord with the requirements of satellite laser *** when the range gate width exceeds 400 ns,ranging accuracy will decline *** noise ratio will be more as long as the range gate to get larger,so the refined filtering algorithm during the data processing is important to extract the useful photons *** order to ensure repeated observation of the same point for 25 times,we deduce the quantitative relation between the footprint size,footprint,and frequency repetition according to the parameters of *** related conclusions can provide some references for the design and the development of the domestic single photon laser altimetry satellite.

关键词： satellite laser altimeter range gate ranging accuracy detection probability monte carlo single photon laser

A Method for Improving ranging accuracy of Short-range Millimeter Wave Radar

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Defence Technology（防务技术） 2010年第4期6卷 273-278页

作者：吴礼彭树生肖泽龙是湘全 School of Electronic Engineering and Optoelectronic Technology Nanjing University of Science and Technology

The range-velocity ambiguity caused by moving target influences on the ranging accuracy of a short-range millimeter wave radar greatly.A new method was presented in this paper to reduce the range-velocity ambiguity and improve the ranging accuracy by estimating parameters of the echo signal with fractional Fourier transform and ***,a new quick searching algorithm was given also to increase the calculation *** to the Chinese remainder theorem method,the proposed method is excellent for its simplicity and reducing the computation *** simulation results show its validity.

关键词： radar engineering fraction Fourier transform short-range millimeter wave radar ranging accuracy

Design and derivation of the dual transponder carrier ranging system

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Journal of Zhejiang University-Science C(Computers and Electronics) 2013年第5期14卷 383-394页

作者： Ming-chen ZHAO Chun-hui WANG Zhong-he JIN Department of Information Science and Electronic Engineering Zhejiang University

The accuracy of microwave ranging is mainly limited by the frequency instability of the oscillator that generates the carrier phase signal. A dual transponder carrier ranging method is used to minimize the oscillator noise by combining the reference and the to-and-fro measurements. This ranging approach together with pseudo-noise ranging or other means can be used to measure the inter-satellite distance with a high precision. The pseudo-noise ranging system or other ranging systems help to solve the integer circles while the dual transponder ranging system guarantees the accurate fractional circle. The two satellites work in the master-slave mode. The range measurements are derived on the master satellite while the slave satellite just coherently transfers the received signal, so that the dual transponder ranging system does not need to rely on the time tagging system to synchronize the two satellites. This study first describes the dual transponder carrier ranging system and shows how the system removes most of the oscillator noise components effectively. Then, a detailed design scheme on the frequency planning of the ranging system is presented and the supporting analysis illustrates the feasibility of this system. Based on the design innovation, a laboratory demonstration system is assembled to verify the realizability of the dual transponder ranging system. The experimental results demonstrate that a high level of accuracy (about 30 μm under laboratory circumstance) can be achieved by the use of the proposed dual transponder carrier ranging system.

关键词： Inter-satellite Carrier ranging Oscillator noise High precision ranging accuracy

accuracy Analysis of BOC Signal Dual Side-band Algorithm on Non-ideal Channel

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Accuracy Analysis of BOC Signal Dual Side-band Algorithm on ...