The invention discloses a method for non cooperative wireless communication terminal signal extraction method of TDOA, beacon first set a location known, according to a protocol for transmitting the beacon signal periodically calibration signal received by the receiving station, wireless communication terminal and beacon radiation, each receiving station in accordance with their own clock measurement terminal and get beacon transmit signal arrive at the receiving station on time, and the measurement result is transmitted to the central station, the central station according to the measurement result of each receiving station reported, eliminate the receiving clock error between stations using a beacon, get the time difference of arrival terminal signal accurately, and finally calculate the position of the terminal. The invention provides a without cable is arranged between the plurality of receivers or wireless link, only by transmitting the calibration signal with known beacon position, you can get the accurate measurement of each receiver terminal signal between the time difference of arrival, and then determine the terminal location method, system deployment requirements, and reduce the cost of the receiver.
【技术实现步骤摘要】
一种对非配合无线通信终端信号到达时差提取方法
本专利技术涉及无线通信
,尤其涉及一种对非配合无线通信终端信号到达时差提取方法。
技术介绍
随着移动通信和移动互联网的快速发展,无线通信用户终端(例如手机、带有WIFI功能的平板电脑,笔记本电脑等,以下简称为终端或用户终端)越来越多,大多数人都会随身携带手机等无线通信终端。在一些应用场合,例如灾后对人员的搜救、抓捕犯罪嫌疑人、区域安防、反恐等需要在手机等终端非配合的状态下获取终端较为精确的位置信息,另外在建筑物内、隧道、桥梁下方等GPS信号被遮挡的环境下,终端无法通过内置的GPS接收机完成对自身的定位,也需要一些其他的手段来辅助获取自身的位置。现有的对非配合用户终端进行定位的方法主要有以下几种:1)当终端为移动通信手机时,运营商通过后台确定手机所在小区,进而大致确定其所在位置,然后在现场通过便携式设备接收并测量手机信号的强度,按照信号增强的原则,引导操作人员逐渐逼近手机所在位置,这个方法需要较长时间的搜索过程,才能够定位到目标手机终端;2)当终端为移动通信手机时,可在现场通过伪基站诱发目标手机进入伪小区,然后通过 ...
【技术保护点】
一种对非配合无线通信终端信号到达时差提取方法,其特征在于,包括以下步骤:步骤1、目标终端信号到达接收站2和接收站1的真实时间差为:
【技术特征摘要】
1.一种对非配合无线通信终端信号到达时差提取方法,其特征在于,包括以下步骤:步骤1、目标终端信号到达接收站2和接收站1的真实时间差为:信标信号到达接收站2和接收站1之间的真实时间差为:上面公式中,接收站1测量得到信标信号和目标终端信号到达时间分别为和接收站2测量得到信标信号和目标终端信号到达时间分别为和以发射时钟为基准,接收站1时钟超前发射|ΔT1|,接收站2时钟滞后发射|ΔT2|,表示目标终端信号到达接...
【专利技术属性】
技术研发人员:吴双,
申请(专利权)人:芜湖华创光电科技有限公司,
类型:发明
国别省市:安徽,34
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