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Remote Sensing of Sea Surface Wind of Hurricane Michael by GPS Reflected Signals
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作者 ZHOU Zhaoming FU Yang +1 位作者 XUE Zhengang CUI Hongguang 《Geo-Spatial Information Science》 2006年第1期24-31,54,共9页
In this paper, the propagating geometry and the w av eform of the GPS reflected signals are expatiated in detail. Furthermore, the pr inciple and the method of retrieving sea surface wind are presented. In order to te... In this paper, the propagating geometry and the w av eform of the GPS reflected signals are expatiated in detail. Furthermore, the pr inciple and the method of retrieving sea surface wind are presented. In order to test the feasibility of retrieval, the experiment data obtained by NASA in Hurr icane Michael are used. The result shows that the retrieval accuracy of wind spe ed is about 2 m/s. 展开更多
关键词 gps reflected signals scattering zone sea surface wind retrieval
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Analysis of unmanned aerial vehicle navigation and height control system based on GPS 被引量:3
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作者 Jianjun Zhang Hong Yuan 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2010年第4期643-649,共7页
According to the characteristic of global positioning system(GPS) reflection signals,a GPS delay mapping receiver system scheme is put forward,which not only satisfies the unmanned aerial vehicle(UAV) guidance loc... According to the characteristic of global positioning system(GPS) reflection signals,a GPS delay mapping receiver system scheme is put forward,which not only satisfies the unmanned aerial vehicle(UAV) guidance localization but also realizes height measurement.A code delay algorithm is put forward,which processes the direct and land reflected signal and outputs the navigation data and specular point.The GPS terrain reflected echo signal mathematical equation is inferred.The reflecting signal area,when the GPS signal passes the land,is analyzed.The height survey model reflected land surface characteristic is established.A simulation system which carries guidance localization of the UAV and the height measuring control through the GPS direct signal and the land reflected signal is designed,taken the GPS satellite as the illumination source,the receiver is put on the UAV.Then the UAV guidance signal,the GPS reflection signal and receiver's parallel processing are realized.The parallel processing reduces UAV's payload and raises system's operating efficiency.The simulation results confirms the validity of the model and also provides the basis for the UAV's optimization design. 展开更多
关键词 height measuring global positioning system(gps reflected signal delay mapping receiver unmanned aerial vehicle(UAV).
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