ISAR Resolution Evaluation Method Based on High Precision Motion Information
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摘要: ISAR分辨率评估是空间目标成像雷达精度鉴定的重要内容。该文针对ISAR分辨率评估中的基准计算与方法设计两个关键问题进行了详细分析，进而提出了基于空间目标高精度轨道与遥测姿态等运动信息的ISAR方位向定标方法。在此基础上，建立了一种新的ISAR分辨率评估方法。利用某雷达精度鉴定试验中对不同空间目标的实测成像数据，验证了该文方法的合理性与有效性。Abstract: ISAR resolution evaluation is an important part of accuracy evaluation of space target imaging radar. Two difficult problems, i.e. the selection of evaluation criteria and the design of evaluation methods are discussed in detail. Then an ISAR cross-range scaling algorithm based on high precision orbit and telemetry attitude of space target is proposed. A new ISAR resolution evaluation method is established based on the new scaling technique. The method is validated by using the actual imaging test data for different types of space targets.
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表 2 某雷达精度鉴定试验中ISAR分辨率评估结果
目标 分类 距离向 方位向 目标 分类 距离向 方位向 1 3 1.46 1.51 6 1 1.67 1.60 2 3 1.47 1.50 7 1 1.65 1.52 3 3 1.46 1.51 8-1 2 1.64 1.41 4 3 1.48 1.50 8-2 2 1.31 1.7 5-1 1 1.70 1.53 9 4 1.553 1.43 5-2 1 1.70 1.64 10 4 1.78 1.53 
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