微弱导航卫星反射信号检测技术研究  

Study on Detecting Weak Reflection of Navigating Satellite Signal

作　　者：刘玉军[1] 张行知 赵萌[1] 

机构地区：[1]装甲兵工程学院信息工程系,北京100072

出　　处：《电子科技》2016年第12期37-40,共4页Electronic Science and Technology

摘　　要：微弱导航卫星反射信号检测技术是利用导航卫星作为照射源,根据导航信号在地面、海面、空中等不同场景下的目标反射特性,通过设计高灵敏探测接收机、导航卫星电文辅助的长时间相干累积算法、相干非相干一体化多模复合累积算法和TBD检测接收算法,可以实现导航卫星经目标物体反射二次信号的有效检测接收。同时,通过该技术的研究,可以评估导航卫星信号用于远距离无源侦察探测的技术可行性。Consider navigating satellite as source of irradiate, to make use of reflection of navigating signal in detecting objects on ground, sea surface and in the space, detecting technology used in receiving weak reflection of navigating satellite signal is studied in this paper. Including design of high sensitive detection radio receiver, development of long time coherent signal accumulation algorithm aided by navigating satellite message, integrated coherent/incoherent multimode signal accumulation algorithm and TBD algorithm, this detecting technology implemented an effective method in receiving weak reflection of navigating satellite signal（ such as Beidou Satellite, GPS, GALILEO, GLONASS） from detection targets. Besides, the feasibility of using navigation signal in long distance passive detection will be assessed through the research of the technology.

关 键 词：捷变频 直达波 参数提取 电子侦察 

分 类 号：TN97[电子电信—信号与信息处理]