电磁波干扰下的工程GPS定位优化与仿真  

Optimization and Simulation of Engineering GPS Positioning under Electromagnetic Interference

作　　者：肖飞[1] 覃超贤[1] 韦源生[1] 韦东波[1] 

机构地区：[1]桂林理工大学南宁分校土木与测绘工程系,广西南宁530001

出　　处：《计算机仿真》2013年第5期230-233,333,共5页Computer Simulation

基　　金：广西教育厅科研项目(桂教科研[2006]26~121;广西自然科学基金项目(桂科基0991023)

摘　　要：研究GPS信号的优化定位问题。GPS在大气层传播中,信号要受到不可抗拒的电离层和对流层电磁波干扰,加之大城市或山区高层建筑物及树木等对信号的影响,会导致信号的非直线传播,造成定位存在多路径效应。传统GPS抗干扰定位算法主要针对静态绝对定位,对于产生多路径效应的动态干扰,定位结果跳跃较大,稳定性差。提出了一种加权约束残差修正的工程GPS抗电磁波干扰定位算法。利用数据组合方法,对工程GPS测量信号进行采集。通过加权约束残差修正方法,并对采集的GPS信号进行残差修正处理,在电磁波干扰的情况下形成深零陷,从而提高工程GPS测量信号的抗干扰性。实验结果表明,改进算法可对工程GPS测量进行电磁波抗干扰处理,能够有效提高信号的抗干扰性能。Research the accurate localization of GPS signal. The paper put forward an algorithm of engineering GPS resistance to electromagnetic interference based on weighted constraint residual correction. The algorithm was used for data combination method and to collect the engineering GPS signals. Tthe weighted constraint residual correc- tion method was used to process the acquisition of GPS signals; under the electromagnetic interference, it forms a deep zero trap, so as to improve the anti-interference performance. The experimental results show that this algorithm can effectively improve the anti-interference performance of the signals.

关 键 词：工程测量 电磁波 抗干扰 

分 类 号：F127[经济管理—世界经济]