【摘要】 该文简述了利用GPS散射信号进行微波遥感的背景和优点,并从GPS海面散射信号极化特性、信号波动情况、波程差引起散射信号相对直射信号的码延迟以及由于海面粗糙度引起的散射信号相关功率扩散几个方面详细分析了海面散射GPS信号检测技术。给出了自行研制的延迟映射接收机的工作原理,在天津近海进行了首次搭载飞行试验,数据分析结果与理论分析符合。更多还原

【Abstract】 Background and advantages of GPS based remote sensing are introduced, characteristics of forward scattered GPS signal such as polarization, variation, code delay due to the wave travel distance difference between direct and scattered signal, and the cross-correlation power expansion due to sea surface roughness are discussed in detail. Working principle of the self-developed delay mapping receiver is also presented. The first test flight experiment is done at Tianjin near sea with the delay mapping receiver mounted on an airplane. Analysis shows that results have good agreement to the theory discussed above.更多还原