The Design And Implementation Of The Wireless Signal Monitoring System Software

With the rapid development and widespread use of wireless communication technologies,the electromagnetic environment becomes more complex,which results in the lack of electromagnetic spectrum resources.In the optimized management of electromagnetic spectrum resources,the wireless signal monitoring appears increasingly important.Therefore,it is a very important research field to develop a wireless signal monitoring system software which can capture monitoring signals,extract information,analyze and recognize signals.This thesis designs a software platform which can be matched with the portable electromagnetic signal detector.It enables the equipment to maximize its potential,to improve the work efficiency substantially,so that wireless signal monitoring can be carried out more efficiently.The primary content of this thesis is described as follows:(1)The modeling of signals is completed.Firstly,a model library of common signal types is established.IQ data and power spectrum shape of each signal type are obtained through the communication system simulation.Secondly,for six of these signal types,the cyclic spectrum is estimated,six features are extracted,and the signal feature library is established.(2)A method of wireless signal detection and identification based on power spectrum and cyclic spectrum is designed.The detection and identification for monitoring signals is realized by comparing with the signal model library and feature library.(3)The design of the wireless signal monitoring system software is realized.VC++ language was used to implement the method designed for signal detection and identification in this thesis.The software includes three modules: signal comparison and marking,signal type table,the analysis of signal cyclic spectrum.Among them signal comparison and marking includes Signal-label,Label-list and Label-management.Ultimately,a software platform which combines spectrum management,signal detection and identification,marking test results on the spot in one is implemented.Besides,the test of the wireless signal monitoring system software is given,which verifies the reliability and usefulness.The result also illustrates that this software can be used to provide guidance on the detection and analysis of wireless signals.As a matter of fact,it has a certain significance in theoretical study and practical applications.