發(fā)布時間：2018-07-25 11:45

【摘要】：研究了運動條件下光子計數(shù)激光測距系統(tǒng)的探測機制,分析了該系統(tǒng)在數(shù)據(jù)處理中涉及到的回波光子信號的統(tǒng)計特性、探測概率等理論問題。針對運動條件下的測距背景,根據(jù)該系統(tǒng)的回波信號特點,基于Matlab產(chǎn)生了符合統(tǒng)計分布規(guī)律的包含目標回波和噪聲回波的仿真信號。在對泊松濾波算法等傳統(tǒng)數(shù)據(jù)處理算法進行研究的基礎(chǔ)上,提出了一種改進的基于柵格濾波的算法,并利用該算法對仿真回波數(shù)據(jù)進行了處理,最終有效濾除了隨機分布于整個探測空間的噪聲信號,獲得了目標的運動軌跡。與傳統(tǒng)的數(shù)據(jù)處理算法相比,該算法對運動條件下的光子計數(shù)激光測距數(shù)據(jù)具有良好的處理效果。
[Abstract]:The detection mechanism of photon counting laser ranging system under moving conditions is studied. The statistical characteristics and detection probability of the echo photon signal involved in data processing of the system are analyzed. According to the background of ranging under moving conditions and according to the characteristics of echo signal of the system, a simulation signal including target echo and noise echo is generated based on Matlab. Based on the study of traditional data processing algorithms such as Poisson filtering algorithm, an improved raster filtering algorithm is proposed, and the simulated echo data is processed by the algorithm. Finally, the noise signals distributed randomly throughout the detection space are filtered effectively, and the moving track of the target is obtained. Compared with the traditional data processing algorithm, the algorithm has a good effect on the photon counting laser ranging data under moving conditions.
【作者單位】： 中國科學(xué)院上海技術(shù)物理研究所;
【基金】：中國科學(xué)院國防預(yù)研基金項目(CXJJ-14-S133)
【分類號】：P225.2
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本文編號：2143723