Evaluate The Efficiency Of Signal Processing Based On Cross Correlation Theory

The naval battle synthesizing electronics information system is a critical equipment for navy battle and a guarantee of technique, so it is particularly important to evaluate the efficiency of the naval battle synthesizing electronics information system. It is not only the science foundation for the command organization to make decision, but also the basis for the institute of research to improve the performance of the system. The information usable vector is the most essential index of the battle efficiency of the synthesis electronics information system and its model of signal processing is directly connected with its information usable vector. In this article, I choose to study the evaluation methods of the efficiency of the models of signal processing and put forward the evaluation criterion of cross correlation.Correlation operator is widely used in the field of designing the best receiver, signal checking, digital watermark, designing and analyzing matching filter, but all these applications are aiming at the certain signal. In the title, the criterion of cross correlation takes the correlation operator as its theory basis and correlation function and correlation coefficient as its evaluation index o It can be used to evaluate the processing efficiency of uncertain signal and the efficiency of jamming signal and anti-jamming signal as well. In the process of evaluating uncertain signal processing in electronics information system, the selection of standard test signal is the key. This introduces the reasons and basis in selecting standard test signal. It applies Matlab tool to evaluate the efficiency of signal processing and contrasts results of the minimum error rule, the minimum average square error rule, analysis of signal spectrum, evaluation of cross correlation criterion. Cross correlation criterion is a kind of unitary, quantitative time domain evaluation method. With the performance indexes of correlation function and correlation coefficient, this criterion can reflect the degree of the similarity between the practical output signal and the ideal output signal. Besides, its unitary correlation coefficient can qualify the difference among the evaluation of differentkinds of signal processing methods. This paper also introduces the principle of designing the evaluation circuit, analyzing the difficulty one often meets in the course of designing a high frequency electrical circuit and giving its solution.