| 星载GPS-R下视天线的可视性研究 |
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| 引用本文： | 张晓坤,袁洪.星载GPS-R下视天线的可视性研究[J].空间科学学报,2011,31(1). |
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| 作者姓名： | 张晓坤 袁洪 |
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| 作者单位： | 中国科学院光电研究院,北京,100094 |
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| 摘 要： | 对星载GPS-R海洋遥感接收机下视天线的波束中心指向、波束形状、波束推进方式对镜面反射点可视性的影响进行了研究.定义了一个与天线可视区域内地球表面点具有一一对应关系的星下点平面,提出了星下点平面内的天线波束覆盖区域的确定方法及数学表达式,在此基础上分析了不同的波束中心指向、波束形状、波束推进方式对可视性的影响,并根据某型号空间飞行器的轨道数据进行了仿真验证.
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| 关 键 词： | 下视天线 波束中心指向 波束形状 波束推进方式 |
Visibility Research on Downward Antenna of Spaceborne GPS-R System |
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| ZHANG Xiaokun,YUAN Hong.Visibility Research on Downward Antenna of Spaceborne GPS-R System[J].Chinese Journal of Space Science,2011,31(1). |
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| Authors: | ZHANG Xiaokun YUAN Hong |
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| Institution: | ZHANG Xiaokun YUAN Hong (Academy of Opto-Electronics,Chinese Academy of Sciences,Beijing 100094) |
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| Abstract: | The influences on visibility of specular points are investigated from several properties of the spaceborne GPS-R system downward antenna in the oceanographic remote sensing,including beam center pointing,beam geometry and beam scanning manners.In particular,we firstly defined a subastral plane which has a one-to-one mapping relationship with points on the Earth in beam zone coverage;then presented a scheme to figure out beam zone coverage in this plane,and then analyzed the influences on visibility from bea... |
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| Keywords: | GPS-R |
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