首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >HY-2A Altimeter Time Tag Bias Estimation Using Reconstructive Transponder
【24h】

HY-2A Altimeter Time Tag Bias Estimation Using Reconstructive Transponder

机译:使用重构应答器的HY-2A高度计时间标签偏差估计

获取原文
获取原文并翻译 | 示例
           

摘要

Independent clocks provide time tags for the precision orbit determination (POD) equipment and the radar altimeter onboard the HY-2A satellite, and a bias between POD data' time tag and corresponding range observation's time tag from the HY-2A altimeter exists. The time tag bias contributes a bias in the sea surface height observation due to the nonzero time rate of change of the HY-2A altimeter's height. A transponder for in-orbit radar altimeter calibration provides an approach to estimate the time tag bias. The altimeter receives the responding signals from the transponder and generates ranges. Pertinent reference ranges are obtained from the POD data and the transponder's coordinate. Using the ranges from the radar altimeter and the reference ranges, the time tag bias between the POD data and the altimeter observations can be estimated. During an HY-2A altimeter calibration campaign using a reconstructive transponder from August 9, 2012, to July 20, 2014, 17 estimations of the altimeter's time tag bias were obtained. The preliminary results are presented in this letter.
机译:独立的时钟为HY-2A卫星上的精密轨道确定(POD)设备和雷达高度计提供了时间标签,并且POD数据的时间标签与HY-2A高度计对应的距离观测的时间标签之间存在偏差。由于HY-2A高度计的高度的非零时间变化率,时间标签偏差在海面高度观测中造成了偏差。用于在轨雷达高度计校准的应答器提供了一种估计时间标签偏差的方法。高度计接收来自应答器的响应信号并生成距离。相关参考范围是从POD数据和应答器坐标中获得的。使用雷达高度计的范围和参考范围,可以估算POD数据和高度计观测值之间的时间标签偏差。在2012年8月9日至2014年7月20日使用重建应答器进行的HY-2A高度计校准活动中,获得了17次对高度计时间标签偏差的估计。初步结果载于本函。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号