星载激光测高仪脚点坐标解算方法及机载验证*

Spaceborne laser altimeter footprint coordinate calculation method and airborne validation

摘要:

通过分析 ICESat-1 和 ICESat-2 测高载荷地面脚点坐标解算方法，对比分析多波束、单光子体制对地激光三维测绘载荷与传统的单波束、全波形体制激光测高载荷在坐标解算方法上的异同，机载与星载激光雷达坐标解算的异同，建立机载激光雷达坐标解算方法与流程，利用自主研制的机载激光雷达进行飞行试验与验证，对后期机载、星载激光测高雷达激光脚点解算具有借鉴意义。

Abstract:

By analyzing the ICESat-1 and ICESat-2 altimeter payloads, the similarities and differences in coordinate calculation methods between the multi-beam, single-photon system and the traditional single-beam, full-waveform system laser altimetric payloads, the similarities and differences between airborne and spaceborne LiDAR coordinate solving methods and processes are analyzed and compared, and the airborne LiDAR coordinate calculation methods and processes are established, and the independently developed airborne LiDAR is used for flight test and verification, which has reference significance for the later airborne and spaceborne laser altimer footprint geolocation calculation.