摘要
针对双星时差、频差联合定位精度受高程误差影响较大问题,提出了一种数字地图辅助的定位方法。在推导出初始定位算法的基础上,引入三维数字地图以降低零高程假设导致的定位误差,并给出了该方法的定位误差的理论表达式,仿真结果表明了该方法的有效性。
The double-star TDOA-FDOA joint location precise is seriously influenced by altitude error.To overcome this drawback,we present a digital maps aided localization method.First,the initial localization algorithm is derived.Then,three-dimensional digital map is introduced to reduce the localization error caused by zero altitude assumption.And the theoretical location error expressions are also given.The simulation results illustrate the validity of our algorithm.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第23期11-13,共3页
Computer Engineering and Applications
基金
国家自然科学基金资助项目(编号:60372022)
新世纪优秀人才支持计划(编号:NCET-05-0806)
关键词
时差频差联合定位
数字地图
双星定位
定位误差
TDOA-FDOA joint location,digital map, double-star location,location error
