针对雷达导引头天线罩误差斜率的估计问题,提出一种在线估计方法。在建立天线罩寄生回路离散模型的基础上,采用模型参考自适应算法对天线罩误差斜率进行在线估计,并针对典型模型参考自适应算法中参数难以选择的问题,给出了改进的参数自适应调节律。仿真结果表明,此方法可以准确、快速估计天线罩误差斜率,验证了该方法的可行性。

In view of the estimation of a radar seeker's radome boresight error slope, an online method is proposed. On the basis of establishing the radome parasitic loop model, an algorithm based on model reference adaptive system is applied to estimate the radome boresight error slope online. To solve the problem that some parameters are difficult to be selected in typical model reference adaptive algorithm, an improved parameter adaptive adjustment law is given. The simulation results show that this method can estimate the radome boresight error slope accurately and quickly, verifying the feasibility of the method.