合成孔径无源定位性能分析与参数设计

王裕旗; 孙光才; 邢孟道; 张子敬

doi:10.11999/JEIT210524

合成孔径无源定位性能分析与参数设计

doi: 10.11999/JEIT210524

西安电子科技大学雷达信号处理国家重点实验室西安 710071

基金项目: 国家杰出青年科学基金(61825105)

详细信息

作者简介:
王裕旗：男，博士生，研究方向为合成孔径无源定位

孙光才：男，博士，教授，研究方向为合成孔径雷达成像和无源定位

邢孟道：男，博士，教授，研究方向为雷达成像和目标检测与识别

张子敬：男，博士，教授，研究方向为雷达目标检测、雷达极化信息处理

通讯作者:
孙光才　rsandsgc@126.com

中图分类号: TN958
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- PDF下载量: 100
- 被引次数: 0
出版历程
- 收稿日期: 2021-06-07
- 修回日期: 2022-07-27
- 网络出版日期: 2022-08-21
- 刊出日期: 2022-09-19

Performance Analysis and Parameter Design of Synthetic Aperture Passive Positioning

National Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Funds: The National Science Fund for Distinguished Young Scholars (61825105)

摘要

摘要: 合成孔径无源定位中，为获得高的2维分辨率，需要长的合成孔径，但斜距历程的多项式近似会带来距离定位的误差。针对此问题，该文分析了合成孔径定位中距离误差的影响因素，给出了定位误差的近似表达式，同时分析了距离和方位分辨率的影响因素，给出了分辨率的分析方法。在此基础上，综合考虑定位精度和分辨率的约束条件，给出了合成孔径长度参数的优化方法。仿真结果验证了方法的有效性。
- 无源定位 /
- 合成孔径定位 /
- 距离定位误差分析 /
- 定位分辨率分析 /
- 参数优化
Abstract: A long synthetic aperture is required to obtain two-dimensional high resolution in synthetic aperture passive positioning. However, the polynomial approximation of the slant range causes range positioning errors. To resolve the problem, the influencing factors of the range positioning error are analyzed in this paper and an approximate expression of the positioning error is given. The influencing factors of range resolution and azimuth resolution are also analyzed, and the resolution analysis method is studied. On this basis, the optimization method of synthetic aperture length is given by combining the constraints of positioning accuracy and resolution. The simulation results verify the effectiveness of the proposed method.
- Passive positioning /
- Synthetic aperture passive positioning /
- Range positioning error analysis /
- Positioning resolution analysis /
- Parameter optimization

HTML全文

图 1 聚焦位置偏差

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图 2 误差的理论分析结果

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图 3 定位误差随距离变化情况图

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图 4 定位误差随波束宽度变化情况

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图 5 定位误差近似分析结果图

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图 6 距离分辨率分析结果

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图 7 方位分辨率分析结果

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图 8 合成孔径长度上限随距离变化图

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图 9 合成孔径长度下限随距离变化

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图 10 合成孔径长度优选曲线

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表 1 不同距离的波束宽度限制

距离(km) 波束宽度(°)

20 4.55
40 3.83
60 3.46
80 3.22

下载: 导出CSV

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