| 引用本文: | 陈书恒，朱倪瑶，王海鹏，张 鑫. 基于去相关无偏转换量测的外辐射源雷达跟踪算法[J]. 雷达科学与技术, 2026, 24(1): 15-21.[点击复制] |
| CHEN Shuheng, ZHU Niyao, WANG Haipeng, ZHANG Xin. External Radiation Source Passive Radar Tracking Algorithm Based onDecorrelated Unbiased Converted Measurement[J]. Radar Science and Technology, 2026, 24(1): 15-21.[点击复制] |
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| 摘要: |
| 外辐射源雷达通过接收民用辐射源信号来探测目标，具有隐蔽性强、成本低廉的优点，在信息化战争中作用显著。但是辐射源的非合作特性，导致其观测误差较大，需采取滤波技术提高估计精度。转换量测卡尔曼滤波（Converted Measurement Kalman Filter，CMKF）是有源雷达中常用的滤波跟踪方法。外辐射源雷达的转换量测模型结构复杂，非线性强，给应用CMKF带来困难。通过改进初始化、状态预测、转换量测构建等诸多环节，设计出用于外辐射源雷达的去相关无偏CMKF。在构建转换量测模型时，使用了更高精度的等效距离和等效方位来表征目标位置，因此在低信噪比环境下的滤波精度、置信度优于确定性采样算法,表现出很强的竞争力。 |
| 关键词: 外辐射源雷达 目标跟踪 非线性滤波 去相关无偏转换量测 |
| DOI：DOI:10.3969/j.issn.1672-2337.2026.01.002 |
| 分类号:TN953；TN958.97 |
| 基金项目: |
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| External Radiation Source Passive Radar Tracking Algorithm Based onDecorrelated Unbiased Converted Measurement |
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CHEN Shuheng, ZHU Niyao, WANG Haipeng, ZHANG Xin
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Unit 92728 of PLA, Shanghai 200436, China
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| Abstract: |
| External radiation source passive radar, which detects targets by receiving signals from civilian transmitters, is valued for its strong stealth capabilities and low cost, playing a significant role in information warfare. Owing to the none?cooperative nature of the radiation source, the measurement errors are relatively large, necessitating the use of filtering technique to improve estimation accuracy. The converted measurement Kalman filter (CMKF) is a commonly used filtering technique for active radar. However, its application in passive radar is challenging due to the complex structure and high nonlinearity of converted measurement model. By improving multiple aspects such as state initialization, state prediction and measurement conversion, a locally consistent unbiased converted measurement Kalman filter is designed for external radiation source passive radar. The filter employs higher?precision equivalent range and equivalent azimuth to characterize the target position during the converted measurement process. As a result, it demonstrates superior accuracy and consistency under low signal?to?noise ratio (SNR) condition compared to canonical d |
| Key words: external radiation source passive radar target tracking nonlinear filtering decorrelated unbiased converted measurement |
