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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Radar backscatter measurement accuracy for a spaceborne pencil-beam wind scatterometer with transmit modulation
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Radar backscatter measurement accuracy for a spaceborne pencil-beam wind scatterometer with transmit modulation

机译：带发射调制的星载笔形束风散射仪的雷达背向散射测量精度

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Scatterometers are remote sensing radars designed to measure near-surface winds over the ocean. The difficulties of accommodating traditional fan-beam scatterometers on spacecraft has lead to the development of a scanning pencil-beam instrument known as SeaWinds. SeaWinds will be part of the Japanese Advanced Earth Observing Satellite II (ADEOS-II) to be launched in 1999. To analyze the performance of the SeaWinds design, a new expression for the measurement accuracy of a pencil-beam system is required. In this paper the authors derive a general expression for the backscatter measurement accuracy for a pencil-beam scatterometer which includes the effects of transmit signal modulation with simple power detection. Both separate and simultaneous signal+noise and noise-only measurements are considered. The utility of the new expression for scatterometer design tradeoffs is demonstrated using a simplified geometry. A separate paper, ibid., 1997, describes detailed tradeoffs made to develop the SeaWinds design.
机译：散射仪是旨在测量海洋上近地表风的遥感雷达。在航天器上容纳传统的扇形光束散射仪的困难导致了被称为SeaWinds的扫描笔形光束仪的发展。 SeaWinds将成为将于1999年发射的日本高级地球观测卫星II（ADEOS-II）的一部分。为分析SeaWinds设计的性能，需要一种新的表达式来表示笔形光束系统的测量精度。在本文中，作者推导了铅笔束散射仪的反向散射测量精度的一般表达式，其中包括具有简单功率检测的发射信号调制的影响。同时考虑了单独和同时的信号+噪声和纯噪声测量。使用简化的几何体演示了新表达式在散射仪设计折衷中的实用性。同上，1997年，另一篇论文描述了开发SeaWinds设计所进行的详细权衡。

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