Measurement of surface inland water heights using satellite radar altimetry has now advanced to allow a global observation capability. This paper presents an overview of this rapidly advancing field, analysing the current and future monitoring capability for inland water targets, using waveform data from TOPEX, Jason1, Jason2, ERS1, ERS2, Envisat and CryoSat2. These data inform a range of scientific and operational applications. A key factor for inland water height retrieval is the ability to maintain lock over varying terrain. Here the ESA altimeters perform well, with the Envisat RA-2 successfully retrieving data from 25636 targets, of which 15067 are currently useable. The Envisat 1800 Hz Burst Echoes allow the impact of a higher Pulse Repetition Frequency (PRF) to be studied; 7 burst echoes can yield successful height measurements. Initial results from CryoSat2 SAR FBR data are presented, and this paper shows the greatly enhanced monitoring capability possible from SRAL altimeters.
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机译：使用卫星雷达Altimetry的表面内陆水高度的测量现已推进，以允许全局观察能力。本文概述了这种快速推进的领域，使用来自Topex，Jason1，Jason2，ERS1，ERS2，Envisat和Cryosat2的波形数据分析内陆水域目标的当前和未来监控能力。这些数据可通知一系列科学和操作应用。内陆水高度检索的关键因素是能够维持锁定不同的地形。这里，ESA高度计表现良好，Envisat RA-2成功检索来自25636个目标的数据，其中15067目前是可用的。 Envisat 1800 Hz突发回波允许研究更高脉冲重复频率（PRF）的影响; 7突发回波可以产生成功的高度测量。提出了来自CryOSAT2 SAR FBR数据的初始结果，本文显示了SLAL高度计的大大增强的监控能力。
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