基于GPS基线向量的舰载火箭弹姿态测量方法

A Real-Time Attitude Measuring Method for Shipboard Rocket Projectiles Based on GPS Baseline Vectors

提出一种利用GPS载波信号相位差测量技术进行实时确定弹体姿态的方法。通过对载波相位差测量航向和姿态原理的分析,建立GPS姿态确定的单差模型,推导采用GPS多天线姿态测量技术实时获取弹体飞行姿态的解算算法,应用最小二乘法估计解算基线向量,然后对GPS姿态估计算法进行仿真计算。仿真结果验证了模型、算法的正确性和有效性。

In this paper, a method for real-time rocket attitude determination by measuring the difference in GPS carrier phases is proposed. First, a single-difference model is established for the attitude determi- nation based on the relevant measurement principle, and a real-time attitude solution for the projectile with multiple GPS antennas is provided. Then, baseline vectors are estimated with the least-square meth- od. Finally, the recurs[re algorithm is adopted to simulate the GPS attitude measurements. Results show that the algorithm preferably estimates the attitude of rocket projectiles, which successfully validates the presented approach.