Signal Process Technology In The Measure And Control System Using Spread Spectrum Method

As an advanced technology, spread spectrum technology grows rapidly nowadays. It started from military communication and got involved into navigation, measurement, remote control fields and so on. Right now it gets closer and deeper to personal and computer communications.The paper mainly discusses the realization technology of measure and control system using spread spectrum method. Firstly, the principles of spread spectrum communication and measure and control system using spread spectrum method are introduced and those problems of code synchronization and tracking are deeply discussed. After that, the design scheme of digitization measure and control system using spread spectrum method is provided and then intermediate frequency digitization technology, distance and speed measurement methods of double codes are discussed and analyzed. Next, according to system request, the corresponding simulation system model is established. The simulated program is completed by MATLAB and validated by computer simulation. The feasibility of the design scheme is validated through the analysis of simulation result. During simulation process, mistakes could be possibly made cause of system frequency error and Doppler frequency shift. As a solution COSTAS is used in the improved simulation model to complete the synthesis of the frequency of the carrier and in the end the correct demodulation and dispread spectrum results are made.