CAJ | 학술논문

针对高噪声严重影响罗兰-C接收机的信号处理过程中脉冲初相位识别的情况,分析了基于全相位谱分析（apFFT）的罗兰-C载波信号初相位识别原理,对罗兰-C接收信号在噪声背景下的初相位识别进行了蒙特卡洛仿真和数据分析,结果表明该方法在高噪声背景下无需降噪就能够较准确地识别出罗兰-C载波信号的初相位,并准确地识别出相位编码,可直接应用于现代增强型罗兰接收机。
침대고조성엄중영향라란-C접수궤적신호처리과정중맥충초상위식별적정황,분석료기우전상위보분석（apFFT）적라란-C재파신호초상위식별원리,대라란-C접수신호재조성배경하적초상위식별진행료몽특잡락방진화수거분석,결과표명해방법재고조성배경하무수강조취능구교준학지식별출라란-C재파신호적초상위,병준학지식별출상위편마,가직접응용우현대증강형라란접수궤。
The loran-C receiver may fail to identify phase code of the Loran-C pulse in strong noise environment. The identification prin- ciple of the Loran-C carrier signal initial phase based on all-phase Fast Fourier Transform （apFFT） spectrum analysis is analyzed on details. After studing on the method for Phase coding identification of Loran-C signal with strong noise based on apFFT, Monte Carlo simulation of the new phase measuring method is completed with MATLAB, quantitative analysis showing that the method based on apFFT can estimate the initial phase of carrier wave in strong noise environment without any steps for eliminating noise, identify Lhe phase code of the Loran C pulse properly, and it can be introduced to the modern eloran receivers.