Design of Underwater Acoustic Passive Location System for Impact Point at Sea based on the Beidou Difference and Dual Cross-array

摘要

The research on the location of the impact point at sea is of great significance for improving the combat performance and designing the cannonball weapons system. It is not only the prerequisite and important step to evaluate shooting accuracy and density of cannonballs correctly, but also the beneficial information and necessary guarantees for the production and development of cannonball weapons.Starting from the actual situation of the navy, this scheme chooses a relatively reliable and low-cost acoustic location method, and combines the carrier phase difference technology (RTK technology) which has higher accuracy in Beidou satellite navigation to improve the original three-sensor array location method. Based on this, an economic impact point location system at sea is designed, which combines Beidou differential location, direction finding and dual cross-array passive cross-location. Its main idea is to integrate the signals received by Beidou location module and dual cross-array in order to calculate the absolute spatial position of the impact point.In this paper, the dual cross-array location principle is derived in detail, and the system location error is simulated and analyzed. The simulation results show that the location method is accurate and reliable. and the location principle is simple, efficient and convenient, which satisfies the needs of the nearshore shooting ranges at sea, it has certain application value and development prospects.