컨포멀 소나에서의 표적고각 추적 및 융합을 이용한 표적기동분석 성능향상 연구

A Study on Performance Improvement of Target Motion Analysis using Target Elevation Tracking and Fusion in Conformal Array Sonar

Abstract

In this paper, we propose a method of TMA(Target Motion Analysis) performance improvement using target elevation tracking and fusion in conformal array sonar. One of the most important characteristics of conformal array sonar is to detect a target elevation by a vertical beam. It is possible to get a target range to maximize advantages of the proposed TMA technology using this characteristic. And the proposed techniques include target tracking, target fusion, calculation of target range by multipath as well as TMA. A simulation study demonstrates the outstanding performance of proposed techniques.

Fig. 1. The development trends of conformal array sonar^[10,11]

Fig. 2. The functional diagram of data processing in conformal array sonar

Fig. 3. The diagram of target elevation fusion

Fig. 4. The geometric relationship between submarine and target

Fig. 5. The operation of cylindrical array sonar

Fig. 6. The operation of conformal array sonar

Fig. 7. The 1^st scenario

Fig. 8. The true target bearing, elevation, range data

Fig. 9. The RMSE results of target bearing tracking

Fig. 10. The RMSE results of target elevation tracking and fusion

Fig. 11. The RMSE results of target range by multipath

Fig. 12. The RMSE results of TMA range

Fig. 13. The RMSE results of TMA course

Fig. 14. The RMSE results of TMA speed

Fig. 15. The true target bearing, elevation, range data

Fig. 16. The RMSE results of target bearing tracking

Fig. 17. The RMSE results of target elevation fusion

Fig. 18. The RMSE results of target range by multipath

Fig. 19. The RMSE results of TMA bearing

Fig. 20. The RMSE results of TMA range

Fig. 21. The RMSE results of TMA course

Fig. 22. The RMSE results of TMA speed

Table 1. The simulation condition of 1^st scenario