Moving target detection in star map based on distance matrix

Min WANG; Jin-yu ZHAO; Tao CHEN

doi:10.3788/OPE.20172507.1954

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Moving target detection in star map based on distance matrix

Information Sciences | 更新时间：2020-07-07

- Moving target detection in star map based on distance matrix
- Optics and Precision Engineering Vol. 25, Issue 7, Pages: 1954-1960(2017)
- 作者机构：
  
  1.中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
  2.中国科学院大学, 北京 100049
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20172507.1954
  CLC： TP391.4;P123.46
- Received：19 October 2016，
  
  Accepted：19 December 2016，
  
  Published：25 July 2017
- 稿件说明：
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Min WANG, Jin-yu ZHAO, Tao CHEN. Moving target detection in star map based on distance matrix[J]. Optics and precision engineering, 2017, 25(7): 1954-1960.
DOI：

Min WANG, Jin-yu ZHAO, Tao CHEN. Moving target detection in star map based on distance matrix[J]. Optics and precision engineering, 2017, 25(7): 1954-1960. DOI： 10.3788/OPE.20172507.1954.

摘要

为了克服传统星图空间运动目标检测方法对星图帧间图像亮度、帧间配准以及成像模式等具有敏感度较高的缺点，利用星点间拓扑结构稳定的特性，提出了基于距离矩阵的星图运动目标检测方法。该方法首先对各帧星图独立检测目标，然后构建星点的距离矩阵，并与相邻帧星图的距离矩阵作减法，则得到运动目标对应的距离变化较大的一些列（行），利用这个性质完成运动目标的检测。由于距离矩阵与星图成像条件无关，只受运动目标的影响，因此该方法对星图帧间图像亮度、观测平台抖动、帧间失配以及成像模式等具有鲁棒性。仿真试验和真实数据试验表明，该方法在帧间失配等情况下，仍然能够从背景恒星中有效地识别空间运动目标。与传统方法比较，本文方法具有更低的虚警率。

Abstract

In order to overcome defects with higher sensibility of moving target detection method for traditional star map space on image brightness among star map frames

frame-to-frame registration

imaging mode and others

taking advantages of the stable feature of the topological structure among star points

a moving target detection method in the star map based on the distance matrix was proposed. The method was used to independently detect targets of all frames of star map; then

it was used to establish the distance matrix of star points and to subtract the distance matrix for consecutive frame of the star map; the corresponding distance of moving target varied greatly; taking advantages of the property

the detection on the moving target was completed. As the distance matrix was irrelevant to the imaging condition of the star map but was influenced by the moving target

thus the method had robustness on image brightness among star map frames

shaking of the observation platform

inter-frame mismatch

imaging mode and others. The simulation experiment and the truthful data experiment show that the method can be used to effectively identify spatially moving targets in background fixed stars under the condition of inter-frame mismatch. Comparing with the tradition method

the method in the thesis has lower false alarm rate.

关键词

Keywords

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