Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics
Modulation model of radar backscatters is an important topic in the remote sensing of oceanic internal wave by synthetic aperture radar (SAR). Previous studies related with the modulation models were analyzed mainly based on the hypothesis that ocean surface waves are Gaussian distributed. However,...
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doaj-b4d1779110564ffc8f3c2d3c40c24ad92020-11-24T22:32:39ZengMDPI AGRemote Sensing2072-42922017-05-019550110.3390/rs9050501rs9050501Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order StatisticsPengzhen Chen0Lei Liu1Xiaoqing Wang2Jinsong Chong3Xin Zhang4Xiangzhen Yu5National Key Laboratory of Science and Technology on Microwave Imaging, Beijing 100190, ChinaInstitute of Spacecraft System Engineering, China Academy of Space Technology, Beijing 100094, ChinaInstitute of Microelectronics of Chinese Academy of Sciences, Beijing 100029, ChinaNational Key Laboratory of Science and Technology on Microwave Imaging, Beijing 100190, ChinaNational Key Laboratory of Science and Technology on Microwave Imaging, Beijing 100190, ChinaShanghai Radio Equipment Institute, Shanghai 200090, ChinaModulation model of radar backscatters is an important topic in the remote sensing of oceanic internal wave by synthetic aperture radar (SAR). Previous studies related with the modulation models were analyzed mainly based on the hypothesis that ocean surface waves are Gaussian distributed. However, this is not always true for the complicated ocean environment. Research has showed that the measurements are usually larger than the values predicted by modulation models for the high frequency radars (X-band and above). In this paper, a new modulation model was proposed which takes the third-order statistics of the ocean surface into account. It takes the situation into consideration that the surface waves are Non-Gaussian distributed under some conditions. The model can explain the discrepancy between the measurements and the values calculated by the traditional models in theory. Furthermore, it can accurately predict the modulation for the higher frequency band. The model was verified by the experimental measurements recorded in a wind wave tank. Further discussion was made about applicability of this model that it performs better in the prediction of radar backscatter modulation compared with the traditional modulation model for the high frequency band radar or under lager wind speeds.http://www.mdpi.com/2072-4292/9/5/501radar backscattermodulation modelinternal wavethird-order statisticshigh frequency band radar |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Pengzhen Chen Lei Liu Xiaoqing Wang Jinsong Chong Xin Zhang Xiangzhen Yu |
spellingShingle |
Pengzhen Chen Lei Liu Xiaoqing Wang Jinsong Chong Xin Zhang Xiangzhen Yu Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics Remote Sensing radar backscatter modulation model internal wave third-order statistics high frequency band radar |
author_facet |
Pengzhen Chen Lei Liu Xiaoqing Wang Jinsong Chong Xin Zhang Xiangzhen Yu |
author_sort |
Pengzhen Chen |
title |
Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics |
title_short |
Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics |
title_full |
Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics |
title_fullStr |
Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics |
title_full_unstemmed |
Modulation Model of High Frequency Band Radar Backscatter by the Internal Wave Based on the Third-Order Statistics |
title_sort |
modulation model of high frequency band radar backscatter by the internal wave based on the third-order statistics |
publisher |
MDPI AG |
series |
Remote Sensing |
issn |
2072-4292 |
publishDate |
2017-05-01 |
description |
Modulation model of radar backscatters is an important topic in the remote sensing of oceanic internal wave by synthetic aperture radar (SAR). Previous studies related with the modulation models were analyzed mainly based on the hypothesis that ocean surface waves are Gaussian distributed. However, this is not always true for the complicated ocean environment. Research has showed that the measurements are usually larger than the values predicted by modulation models for the high frequency radars (X-band and above). In this paper, a new modulation model was proposed which takes the third-order statistics of the ocean surface into account. It takes the situation into consideration that the surface waves are Non-Gaussian distributed under some conditions. The model can explain the discrepancy between the measurements and the values calculated by the traditional models in theory. Furthermore, it can accurately predict the modulation for the higher frequency band. The model was verified by the experimental measurements recorded in a wind wave tank. Further discussion was made about applicability of this model that it performs better in the prediction of radar backscatter modulation compared with the traditional modulation model for the high frequency band radar or under lager wind speeds. |
topic |
radar backscatter modulation model internal wave third-order statistics high frequency band radar |
url |
http://www.mdpi.com/2072-4292/9/5/501 |
work_keys_str_mv |
AT pengzhenchen modulationmodelofhighfrequencybandradarbackscatterbytheinternalwavebasedonthethirdorderstatistics AT leiliu modulationmodelofhighfrequencybandradarbackscatterbytheinternalwavebasedonthethirdorderstatistics AT xiaoqingwang modulationmodelofhighfrequencybandradarbackscatterbytheinternalwavebasedonthethirdorderstatistics AT jinsongchong modulationmodelofhighfrequencybandradarbackscatterbytheinternalwavebasedonthethirdorderstatistics AT xinzhang modulationmodelofhighfrequencybandradarbackscatterbytheinternalwavebasedonthethirdorderstatistics AT xiangzhenyu modulationmodelofhighfrequencybandradarbackscatterbytheinternalwavebasedonthethirdorderstatistics |
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1725733049297010688 |