Simulation Research on Sec Search Algorithm for Medium Range Air-to-Air Missile Attack Area

In order to meet the requirements of fast solution and improve the precision of attack area calculation, a Sec search algorithm combining block search method and dichotomy was proposed. The three degree of freedom trajectory model of missile and target is established after considering the delay of steering engine and the factors of different atmospheric resistance at different potential heights. Firstly after determining the block interval, the result is taken as the initial value interval of boundary calculation by block search. Secondly, miss distance is taken as adaptive variable to search for the improvement of classical dichotomy. Finally, the near and far boundary values are determined. Through the detailed theoretical analysis of under different potential heights the comparison between the Sec search algorithm and the classical dichotomy algorithm on the near and far boundary search iteration times and operation time, the simulation results show that the Sec search algorithm is better than dichotomy algorithm in operation time and accuracy.