Design And Realization Of Angle Tracking Algorithm For The Radar Seeker

The algorithm of Angle tracking in PD radar system is designed andrealized in this thesis. Based on the radar seeker theory, some theoreticaland technical problems met in PD radar Angle tracking is analyzed andsolved. The tracking system software and algorithms are designed andtested. The main work is as follows:1. The algorithm of angle tracking is an important part of the wholesoftware. An important reason to cause angle tracking error is the varianceamong the three channels. The principle of measuring angle in the systemand the angle error caused by the variance among the three channels areanalyses. The problem is solved through a special algorithm.The algorithmis effective in the project.2. The thesis designs The algorithm of alterable PRF for Anglesearching.For the inherency eclipse phenomenon of high-PRF PD seeker,one method of effective anti-eclipse algorithm by using the alterable PRFis proposed in the paper, echoed signal falls in the center of recieving areaby changing PRF in the defined PRF-scope, so PD radar seeker systemworks in the clear area all the while.3. Filtering algorithm is very important in the angle tracking loop, andit influences the tracking effect directly. The thesis designs the algorithmof α－β filter and kalman filter, the effectiveness of the algorithm issimulated. The result of the simulation proves that the algorithm iseffective.4. Interdependent algorithm of angle tracking and velocity trackingare designed. Some technical problems of velocity tracking is analyzed andstudied, information amendatory of velocity tracking loop is completed. The detailed algorithms of the project is presented in this thesis,simulation and the inter experiments prove the validity of the proposedalgorithms.