摘要
实现了基于DSP的GPS双天线实时姿态测量系统 ,采用Kalman滤波估计载体的位置、速度和初始模糊值搜索距离 ,然后采用FASF和LAMBDA解算整周模糊度和直接法计算载体的姿态 ,给出了基于DSP的硬件实现。相对于传统的模糊度解算方法 ,所采用的整周模糊度解算方法具有效率更高、更便于实时和动态应用的特点 ,实现了与多天线GPS姿态测量系统相当的精度。
This paper implement GPS twin antennas real time attitude determination system based on DSP.Position, velocity and float ambiguity states are estimated using Kalman filter.Then the integer ambiguity is resolved utilizing FASF and LAMBDA. At last, the, attitude is computed with direct method and hardware realization was presented based on DSP.Compared with traditional ambiguity resolution method, the method introduced in this paper can improve the efficiency of the ambiguity search and is more fit to real time and dynamic application. Furthermore, this paper obtained a comparative precision to multi antenna system. The reserch work in this paper is valuable to the practical applications and the theoretical research of GPS attitude determination.
出处
《电波科学学报》
EI
CSCD
2002年第6期661-665,共5页
Chinese Journal of Radio Science
