“SZ-4”飞船高度计天线指向角反演方法
A retrieval method of antenna pointing information of “SZ-4” space-borne altimeter
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摘要: 利用2003年2月7到8日“SZ-4”高度计的波形数据,经过波形数据预处理(波形为1 s的平均、去除热噪声和波形归一化)后,对海面回波波形后沿进行拟合,计算出了高度计天线的指向角,结果表明,“SZ-4”飞船高度计天线的指向角几乎全部在0.024°以内,天线指向在计算时间内比较稳定.
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关键词:
- “SZ-4”飞船高度计 /
- 天线指向角 /
- 反演方法 /
- 波形
Abstract: Using "SZ-4" space-borne altimeter waveforms data on 7 to 8 February 2003,raw data are preprocessed,which include waveforms' 1 s average,thermal noise eliminatim and normalization.Then the trailing edge of the sea surface return wave waveforms is fitted with a fitting method to calculate the pointing angle of altimeter antenna.These results show that "SZ-4" space-borne altimeter pointing angle of altimeter antenna is almost wholly less than 0.024°,antenna pointing is very stable within computing time.-
Key words:
- “SZ-4” space-borne altimeter /
- antenna pointing angle /
- retrieval method /
- waveform
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BATOULAS S,OUAN-ZAN Zanife.Analysis of the Mispointing Angle Obtained during the AOCS Test[R].IFREMER Contract,CLS.2000.1-20. MOORE R K,FUNG A K.Radar determination of winds at sea[J].IEEE,1979,67:1 504-1 521. CHELTON D B,McCABE P J.A review of satellite altimeter measurement of sea surface wind speed:with a proposed new algorithm[J].JGeophysRes,1985,90:4 707-4 720. RODRIGUEZ E Chapman.Extracting ocean surface information from altimeter returns:the deconvolution method[J].J Geophys Res,1988,94:9 761-9 778. HAYNES G S.Radar altimeter mean return waveforms from near-normal-incidence ocean surface scattering[J].IEEE Trans Antennas Propagat,1980,28:687-692. BATOULAS S,OUAN-ZAN Zanife.ERS-2 radar altimeter off pointing impact study taskl-Impact of the Mispointing on the Altimeters Measurements by Simulation[R].1999.1-11 BATOULAS S' OUAN-ZAN Zanife.ERS-2 Radar Altimeter off pointing impact Study/Task 2-Analysis of the Impact of the Mispointing on the Altimeters Measurements Using OPR data[R].IFREMER Contract,CLS.1999.1-41. -
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