CAJ | 학술논문

浮标声纳是常用的反潜探测装置，浮标声纳受到功耗、体积和硬件复杂度等因素的限制，无法原地进行信号的复杂处理，通常将接收数据通过无线信道发送到终端设备进行处理。由于多径传播、衰落特性以及多普勒效应等众多因素的干扰，信号在无线传播中会产生误码并影响最终系统目标方位估计性能，传统的方位估计算法抗误码干扰的能力很差，在高误码率情况下往往无法正确估计。为解决上述问题，提出了将慢特征分析法应用于目标方位估计，提高高误码率下目标方位估计的精确度，并通过matlab仿真，验证了上述方法理论的正确性及在工程运用中的可行性。
부표성납시상용적반잠탐측장치，부표성납수도공모、체적화경건복잡도등인소적한제，무법원지진행신호적복잡처리，통상장접수수거통과무선신도발송도종단설비진행처리。유우다경전파、쇠락특성이급다보륵효응등음다인소적간우，신호재무선전파중회산생오마병영향최종계통목표방위고계성능，전통적방위고계산법항오마간우적능력흔차，재고오마솔정황하왕왕무법정학고계。위해결상술문제，제출료장만특정분석법응용우목표방위고계，제고고오마솔하목표방위고계적정학도，병통과matlab방진，험증료상술방법이론적정학성급재공정운용중적가행성。
The most common untisubmarine detector is sonar buoy. Due to the limitations of volume, hardware complexity and power consumption, sonar buoy cannot handle data by itself. Sonar buoy equipment transmits received signals through wireless channel to the processing terminal on airplanes or ships. The multipath effects, fading char-acteristics, and Doppler spread of wireless communication channel can cause bit error and finally influence the DOA performance of sonar signal processing. To solve these problems, this article applied slow feature analysis to DOA es-timation. The exactness in the theory, the feasibleness in engineering and the usability of the method were proved by using Matlab simulation.