中文摘要：

导航卫星信号经由空间飞行器后将发生反射与散射,此信号对于飞行器自身的定位通常作为多径信号被消除。利用双基无源雷达的概念,提出利用该信号实现空间飞行器的远程定位方法。该方法充分利用空间飞行器对于导航卫星信号的反射与散射,在地面/空中设置可以接收此反射信号的接收机,从而实现飞行器的探测。接收机利用码延迟锁定环路实现直射信号与反射信号的锁定,并通过求解直射信号与反射信号的相关功率获得其路径差,进而计算出空间飞行器的位置。介绍了利用延迟映射接收机（DMR）探测空间飞行器的系统组成,并给出了远程定位的数学模型、关键技术分析、DMR的设计原理及验证实验,实验结果表明所设计的DMR可以有效地接收到导航卫星反射信号。为空间飞行器的探测提供了一种新型的手段。

英文摘要：

Navigation satellite signals will be reflected by a space vehicle when they are visible within its signal coverage.The reflected signal is generally restrained as a multipath signal for the positioning of the space vehicle itself.The bistatical radar concept is used in this article to propose a remote positioning method through reflected signal processing.A receiver stationed on land or in air could be used to receive the signal reflection and scatter and therefore detect the position of the space vehicle.Code delay locked loops are used for signal processing,i.e.the correlation power is given to calculate the path delay between the reflected signal and the direct one.The position of the space vehicle is then computed based on the proposed mathematical model.The system architecture is given and described in detail including its crucial technology.The principle of delay mapping receiver（DMR）and the test of validation are discussed for the reflected signal receiving and processing.The test result shows that the proposed DMR can process the reflected satellite signal validly.It provides a new way for space vehicle detection and positioning.