基于相关法的塔康回答信号分选*

针对塔康单站侦测系统中回答脉冲的分选问题,在询问脉冲分选完成的前提下,利用频闪效应,采用相关法,完成对应询问回答脉冲的分选配对。分析了相关法的原理及分选算法流程,并针对一般相关法实时性差的问题,借鉴计算机中的流水线思想,提出了时域上的分段相关累加以及频域上的FFT变换的方法对数据进行流水线处理,较大的提高了数据处理速度。仿真实验验证了相关法应用于塔康回答脉冲分选的有效性和实用性。

Response Signal Sorting of TACAN Based on Cross Correlation

For the issue of the response signal sorting in TACAN localization system with single station, the sorting is accomplished by using cross correlation based on the accomplishment of interrogate signal sorting and stroboscopic effect. The principle and structure of arithmetic is analyzed. A method based on the piecewise summation correlation of time domain and the fast fourier transform of frequency domain is proposed to deal with the issue of poor real-time capability in common cross correlation. The speed of data processing is improved in this way. Simulation results demonstrate the effectiveness and the practicality of cross correlation.