Research on Feature Extraction of the Laser Beam Information Field Riding Guidance Technology Based on Wavelet Transform

In laser beam riding guidance system, the information field of laser beam is the control information of guiding the missile flighting and it is the main test content of the missile weapon system state analysis. In the course of guidance, the information in different periods, positions and distances are different, however, it is consistent in the same period, position and distance, it is four-dimensional variable that contains a three-dimensional space variable and an one-dimensional time variable and the correlative nature is revealed between the time and distance variable. It is always a problem that the test of the information field with strict support conditions is difficult to adjust and need a long time, and the equipments are damaged heavily in the test. At present, the key content in the test of the information field is to extract the position information in the information field and assess the state through position information. The assessment method of information field of laser beam and the technique of feature extraction in the position of information field has been introduced in detail.