末制导环境下余数查表法的优化设计

Optimization Design of Residues'Difference Look-up Table Method on the Condition of Terminal Guidance

余数查表法作为解距离模糊问题的主要方法,应用在末制导环境下存在优点及不足,为提高其解模糊性能,提出了余数查表法的优化设计方法。给出了余数查表法基准重频的选取准则,通过基准重频信号的最优选取,可实现相同发射信号下余数查表法的最优解模糊,并提出了利用发射各重PRF信号的最大不模糊距离为单位设计余数表的方法。采用新的余数表进行解模糊可以在保证余数查表法解模糊可靠性的同时大大缩短余数查表法解模糊运算时间,为余数查表法解距离模糊应用在末制导环境下提供可靠保证。

The residues＇ difference look-up table method is the main method to resolve range ambiguity. Its advantage and disadvantage of applied on the condition of terminal guidance are analyzed. To improve the range ambiguity resolution performance, an optimization design of residues＇ difference look-up table method is proposed. The selection rule of reference PRF of residues＇ difference look-up table method is presented. By optimal selection of the reference PRF, the optimum performance of residues＇ difference look-up table method can be realized. A new design method of residues＇ difference table set up by the unit of maximum non-ambiguity range of each transmitting signal is given. The new design method ensures fast computation and high accuracy, which may provide reliability for terminal guidance.