| GSM上行信号的截取与传输时延的估计 |
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| 引用本文： | 杜青,陈晓曙.GSM上行信号的截取与传输时延的估计[J].解放军理工大学学报,2002,3(3):25-28. |
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| 作者姓名： | 杜青 陈晓曙 |
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| 作者单位： | [1]南京工程学院，江苏南京210013 [2]东南大学，江苏南京210018 |
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| 摘 要： | 为了实现GSM上行信号的无线侦听，根据GSM上信号的特点，提出了利用帧相关解调对GSM空中上行信号截取并同时确定上行信号传输时延的方案。采用SystemView软件对该方案进行了仿真，结果表明：对于理想信道，该方案可以准确地估计出上行信号的传输时延；对于非理想信道，当信道为两径且两径时延差小于0．1T时，采用该方案估计上行信号传输时延基本准确；若两时延差较大，采用该方案有误差。还提出了多点侦听测量上行信号传输时延以确定被侦听者方位的方案。
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| 关 键 词： | GSM 信息截取 定位 侦听 |
| 文章编号： | 1009-3443(2002)03-0025-04 |
| 修稿时间： | 2001年11月26 |
Scheme to Capture the Aerial Signal in Uplink Channel of
GSM and to Estimate the Delay of Signal |
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| DU Qing and CHEN Xiao,shu.Scheme to Capture the Aerial Signal in Uplink Channel of
GSM and to Estimate the Delay of Signal[J].Journal of PLA University of Science and Technology(Natural Science Edition),2002,3(3):25-28. |
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| Authors: | DU Qing and CHEN Xiao shu |
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| Institution: | Nanjing Institute of Engineering, Nanjing 210013, China;Southeast University, Nanjing 210018, China |
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| Abstract: | The paper presents a scheme to capture the aerial signal in up link channel of GSM and to estimate the delay of the signal by frame correlation. It presents the simulation process and the result of simulations which shows that the scheme is feasible for ideal channel and two path 0.1 T delay for unideal channel. It also presents a scheme to determine the location of the criminals by multi point monitor. |
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| Keywords: | GSM signal capturing location interception |
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