多站测向交叉定位的定位精度研究OA

Positioning enemy radar can obtain radar position,guide interference and anti-radiation attack,which provides a prerequisite for gaining electromagnetic battlefield advantage.Usually,passive positioning is used to obtain radar position,among which the direction finding cross positioning method has good environmental adaptability and requires a moderate amount of equipment,making it the most widely used method in radar passive positioning.However,there is a positioning ambiguity zone in multi-station direction finding cross positioning.Actually,the smaller the ambiguity zone,the higher the positioning accuracy.In order to analyze the positioning accuracy,a method for calculating the accuracy of geometric dilution is studied on the basis of the positioning principle.By analyzing the calculation formula of geometric dilution,the influencing factors of positioning error are direction finding error,reconnaissance station position,the number of reconnaissance stations,and station deployment method.The results of simulation experiments show that the four measures,including improving direction finding accuracy,making reconnaissance stations close to targets,arranging stations reasonably,and increasing the number of reconnaissance stations,can improve positioning accuracy effectively.In practical applications,corresponding measures can be taken as needed to improve the positioning accuracy of direction finding cross positioning,thereby obtaining more accurate radar target position information.To sum up,the proposed method has a certain practical value.