發(fā)布時(shí)間：2018-07-25 11:45

【摘要】：研究了運(yùn)動(dòng)條件下光子計(jì)數(shù)激光測(cè)距系統(tǒng)的探測(cè)機(jī)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(hào)的統(tǒng)計(jì)特性、探測(cè)概率等理論問(wèn)題。針對(duì)運(yùn)動(dòng)條件下的測(cè)距背景,根據(jù)該系統(tǒng)的回波信號(hào)特點(diǎn),基于Matlab產(chǎn)生了符合統(tǒng)計(jì)分布規(guī)律的包含目標(biāo)回波和噪聲回波的仿真信號(hào)。在對(duì)泊松濾波算法等傳統(tǒng)數(shù)據(jù)處理算法進(jìn)行研究的基礎(chǔ)上,提出了一種改進(jìn)的基于柵格濾波的算法,并利用該算法對(duì)仿真回波數(shù)據(jù)進(jìn)行了處理,最終有效濾除了隨機(jī)分布于整個(gè)探測(cè)空間的噪聲信號(hào),獲得了目標(biāo)的運(yùn)動(dòng)軌跡。與傳統(tǒng)的數(shù)據(jù)處理算法相比,該算法對(duì)運(yùn)動(dòng)條件下的光子計(jì)數(shù)激光測(cè)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(guó)科學(xué)院上海技術(shù)物理研究所;
【基金】：中國(guó)科學(xué)院國(guó)防預(yù)研基金項(xiàng)目(CXJJ-14-S133)
【分類(lèi)號(hào)】：P225.2
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本文編號(hào)：2143723