Improvement of center-correction reset between guide-model switching for shipborne radar

Abstract

Antenna servo system of shipborne radar has added digital-guide model and mutual-guide model with the support of center correction in order to capture and track targets conveniently. However, the switching between these two models would create larger step change resulting from the non-reset of center-correction. To this point, this paper represents the working principle of digital guidance, mutual guidance and center correction, and analyses the reason of step change. Then an novel approach is presented to improve the reset of center-correction. The results of experiments indicate that it can avoid the step change caused by the existence of center-correction value, and it enhances the reliability of facility effectively.