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1·So studying on area target's detection algorithms for airborne pulse radar altimeter seem to be important.

因此，基于对雷达高度表面目标的二进制积累检测算法的研究显得尤为重要。

2·Researchers arrived at that figure by comparing the estimated thicknesses and extents of ice seen in a 1970 aerial survey with those measured by an airborne laser altimeter in 2007 and 2008.

研究人员把1970年一次空中观测时估算的冰厚度和冰范围与2007和2008年空载激光高度计测量到的冰厚度和冰范围作了对比，得出上述数字。

3·This issue includes an airborne radar altimeter simulator for radar altimeter of field testing and performance monitoring.

本文研究的是一种机载雷达高度表模拟器，用于雷达高度表的外场测试与性能监测。