基于FPGA的多目标方位模拟方法

Targets Bearing Simulation Method Based on FPGA

论文介绍了一种采用FPGA技术实现的目标方位模拟方法,可同时模拟六个主动目标在海洋环境中的运动,软件可设定目标的个数、初始位置、声源强度以及背景噪声等参数。利用FPGA高速并行处理能力,借助Altera提供的系统级设计工具DSP Builder,通过插值算法来实现目标方位的设定,实时产生声呐目标回波信号。测试结果表明:该系统方位模拟误差小于0.5°,运行稳定,实时性强。

This paper introduces the implementation of multi-targets simulator for the sonar in FPGA, which can simultaneously simulate the movement of the six active targets in marine environments. According to the sonar target simulator software, system parameters can be set by user, such as the target parameters including the target number, the initial target location, the strength of target signal source and so on. With the high-speed parallel processing capabilities of FPGA and the system-level design tools DSP Builder provided by Altera, interpolation algorithm is used to set the targets azimuth and generate target echo signals. The testing results show that the bearing simulation error is less than 0. 5°. It is stable and has a strong real-time performance.