编队基线精确测量是空空导弹集群攻击的前提要求。文中通过GNSS载波相位双差消除各节点公有观测误差,建立关于双频宽巷化组合和伪距的观测方程,利用LAMBDA算法实现模糊度单历元快速解算,并利用残差平方和最小准则结合多历元一致性检验方法对模糊度固定解进行检验。经验证,该方案在高动态环境下基线测量精度可达到10cm,满足编队需要。

The precise measurement of the baseline between the formation nodes is a prerequisite for air-to-air missile cluster formation attacking. The scheme uses double-difference method to eliminate the common observation errors of GNSS carrier phase between the nodes and the observation equation of carrier phase dual-frequency wide-lane combination ambiguity and pseudo range is established. And LAMBDA algorithm is used to calculate the ambiguity with single epoch, and then the ambiguity fixed solution is verified by the criterion of residual error's quadratic sum minimum and multi-epoch consistency. The results show that measurement precision about baseline can be 10 cm in high dynamic environment, meeting the demand of air-to-air missile formation.