Calibration Method and Implementation for the Lunar Penetrating Radar on Chang'e-7 Mission
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摘要: 嫦娥七号搭载的测月雷达用于探测月球次表层结构。为确保探测数据有效性,提升解译结果的准确性与一致性,本文提出一套航天级穿透雷达系统定标方法,成功完成测月雷达系统定标。结果表明雷达性能指标全面达标,满足科学目标需求;获取的系统传递函数和接收时变增益曲线构成月面探测科学数据校准基准;该方案可为后续深空任务中的雷达系统校准提供技术范式。Abstract: The Chang'e-7 mission carries a Lunar Penetrating Radar (LPR) for investigating shallow subsurface structures. To ensure data validity and enhance measurement accuracy, we developed a space-qualified calibration protocol for the penetrating radar system. Successful calibration tests confirmed all performance metrics meet scientific requirements. The acquired transfer function and time-varying gain (TVG) curves establish a robust calibration baseline for lunar data processing. This methodology provides a technical framework for future deep-space radar missions.
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Key words:
- Chang'e-7 /
- LPR /
- System Calibration /
- System Gain /
- Transfer Function /
- Time-Variant Gain
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