基于DSP的声定位智能引信实时性研究

Research of Real-time of Acoustic Localization Intelligent Fuze Based on DSP Device

实时性是评定声定位智能引信性能的重要指标。分析了DSP芯片、定位阵列和定位算法三个影响智能引信实时性的因素。对比了采用TI库函数和C语言完成互相关算法和FFT算法所需的时钟周期数,证明库函数效率高,实时性好,具有很明显的优势。结果表明使用库函数可以在ms级完成广义互相关算法,并通过对比各种加权函数的耗时,为加权函数和采样点数的选择提供依据。

Real-time is a very important indicator to assess performance of acoustic positioning smart fuze. Analysis three factors, the DSP chip,location array,location algorithm, which impact smart fuzees real-time. Compare the number of clock cycles required in the case of using TI＇s own library functions and C language to complete correlation algorithm and FFT algorithm. Proving that library function is efficient, good real-time, and have a very distinct advantage. Using library functions can complete generalized cross-correlation algorithm in ms-class, and by comparing the time-consuming of various weighting functions, provide the basis for the choice of weighting function and sampling stints.