LAMBDA算法在卫星导航定位中的应用研究  

Research on LAMBDA method of satellite navigation positioning

作　　者：张豪[1] 杨春燕[1] 王浩程[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《电子设计工程》2012年第12期64-66,共3页Electronic Design Engineering

基　　金：陕西省自然科学基金(2012JQ8017)

摘　　要：卫星导航定位中,基于载波相位观测值的RTK定位技术能够在达到厘米级的定位精度,其核心技术是整周模糊度的快速解算。采用LAMBDA方法能快速解算整周模糊度完成初始化,实时周跳检测,搜索并固定新的模糊度。利用2个NovAtel接收机采集数据,对采集到的数据进行仿真验证。仿真结果显示,该方法缩短了搜索的时间,定位结果达到了精度要求。RTK positioning technique based on carrier phase observations can acquire centimeter level positioning accuracy, while the key technique is to fast fix ambiguities and compute the ambiguity parameters on Kinematic condition. LAMBDA method which fixes ambiguities quickly is adopted to finish initialization, and cycle slip is detected in real time; then, new ambiguities are searched and fixed. In this paper, The data is collected by two NovAtels GPS receiver. Simulation results indicate that the step solution can solve the integer ambiguity of GPS carrier phase measurements quickly.

关 键 词：动态定位 整周模糊度 LAMBDA 定位精度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]