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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Oceansat-II Scatterometer: Sensor Performance Evaluation, $sigma^{0}$ Analyses, and Estimation of Biases
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Oceansat-II Scatterometer: Sensor Performance Evaluation, $sigma^{0}$ Analyses, and Estimation of Biases

机译：Oceansat-II散射仪：传感器性能评估，$ sigma ^ {0} $分析和偏差估计

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摘要

The Oceansat-II Scatterometer has completed two years in orbit. The instrument has been declared operational, and the normalized radar cross section $(sigma^{0})$ and wind products are being made routinely available to the global operational Numerical Weather Prediction community. The $sigma^{0}$ data from the sensor have been rigorously analyzed for the past two years. Efforts have been put to systematically correlate the biases observed in the data to the onboard functionality of the instrument and to precisely quantify these biases. These analyses have helped not only in the refinement of the ground-processing algorithm but also in the evaluation of sensor performance. This paper presents some of the analyses that have been carried out related to instrument noise calibration with reference to deep-space observations, estimation of biases in the signal bandwidth, and estimation of fixed remnant attitude biases. This paper also addresses the means for rectifying these instrument-related biases.
机译：Oceansat-II散射仪已经完成了两年的轨道运行。该仪器已被宣布可运行，并且标准化的雷达横截面$（sigma ^ {0}）$和风产品正定期提供给全球可操作的数值天气预报社区。在过去的两年中，已经对来自传感器的$ sigma ^ {0} $数据进行了严格的分析。已努力将数据中观察到的偏差与仪器的机上功能系统地关联起来，并精确地量化这些偏差。这些分析不仅有助于改进地面处理算法，而且还有助于评估传感器性能。本文介绍了一些与仪器噪声校准相关的分析，涉及到深空观测，信号带宽偏差的估计以及固定残余姿态偏差的估计。本文还介绍了纠正这些与仪器相关的偏差的方法。

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