A series of traverses has been conducted for validation of the National Aeronautics and Space Administration Ice, Cloud, and land Elevation Satellite 2 (ICESat‐2) on the flat interior of the Antarctic ice sheet. Global Navigation Satellite System data collected on three separate 88S Traverses intersect 20% of the ICESat‐2 reference ground tracks and have precisions of better than ±7 cm and biases of less than ∼4 cm. Data from these traverses were used to assess heights from ICESat‐2, CryoSat‐2, and Airborne Topographic Mapper (ATM). ICESat‐2 heights have better than ±3.3 cm bias and better than ±7.2 cm precision. ATM heights have better than 9.3 cm bias and better than ±9.6 cm precision. CryoSat‐2 heights have −38.9 cm of bias and ±47.3 cm precision. These best case results are from the flat ice‐sheet interior but provide a characterization of the quality of satellite and airborne altimetry.

中文翻译：

---

利用南极冰盖内部的地面数据对卫星和机载测高仪进行比较

已经进行了一系列的遍历，以验证美国国家航空和航天局在南极冰盖平坦内部上的冰，云和陆地高程卫星2（ICESat-2）。在三个独立的88S导线上收集的全球导航卫星系统数据与ICESat-2参考地面轨迹的20％相交，且精度优于±7 cm，偏差小于约4 cm。这些遍历的数据用于评估ICESat-2，CryoSat-2和机载地形测绘仪（ATM）的高度。ICESat-2的高度偏差优于±3.3 cm，精度优于±7.2 cm。ATM高度的偏差优于9.3 cm，精度优于±9.6 cm。CryoSat-2的高度偏差为-38.9 cm，精度为±47.3 cm。