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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Estimation of Sea Surface Roughness Effects in Microwave Radiometric Measurements of Salinity Using Reflected Global Navigation Satellite System Signals
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Estimation of Sea Surface Roughness Effects in Microwave Radiometric Measurements of Salinity Using Reflected Global Navigation Satellite System Signals

机译：使用反射式全球导航卫星系统信号估算盐度的微波辐射测量中的海面粗糙度影响

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摘要

In February–March 2009, an airborne field campaign was conducted using the Passive Active L- and S-band (PALS) microwave sensor and the Ku-band Polarimetric Scatterometer to collect measurements of brightness temperature and near-surface wind speeds. Flights were conducted over a region of expected high-speed winds in the Atlantic Ocean, for the purposes of algorithm development for sea surface salinity (SSS) retrievals. Wind speeds encountered during the March 2, 2009, flight ranged from 5 to 25 m/s. The Global Positioning System (GPS) delay mapping receiver from the National Aeronautics and Space Administration (NASA) Langley Research Center was also flown to collect GPS signals reflected from the ocean surface and generate postcorrelation power-versus-delay measurements. These data were used to estimate ocean surface roughness. These estimates were found to be strongly correlated with PALS-measured brightness temperature. Initial results suggest that reflected GPS measurements made using small low-power instruments can be used to correct the roughness effects in radiometer brightness temperature measurements to retrieve accurate SSS.
机译：2009年2月至3月，使用被动式主动L波段和S波段（PALS）微波传感器以及Ku波段极化散射仪开展了一次机载野战活动，以收集亮度温度和近地表风速的测量值。为了开发用于海面盐度（SSS）检索的算法，在大西洋上的预期高速风区域进行了飞行。在2009年3月2日的飞行中，风速为5至25 m / s。来自美国国家航空航天局（NASA）兰利研究中心的全球定位系统（GPS）延迟映射接收器也进行了飞行，以收集从海面反射的GPS信号并生成后相关功率与延迟的测量值。这些数据被用来估计海洋表面粗糙度。发现这些估计值与PALS测得的亮度温度高度相关。初步结果表明，使用小型低功率仪器进行的反射GPS测量可用于校正辐射计亮度温度测量中的粗糙度影响，以获取准确的SSS。

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