采用卫星QPSK调制方式在高斯信道中传输地震数据的性能分析

摘要

We use the MATLAB software to simulate the transmission of seismic data in the Gaussian channel to acquire the BER（Bit Error Rate） in transmission of seismic data with a satellite system.By transmitting seismic data with the satellite modulation model and Gaussian channel model built from the MATLAB,the BER of transmission data at various SNRs,the impact on signal of modulating and transmitting seismic data with QPSK Modulation in a satellite system are analyzed and compared in this paper.Finally the Monte Carlo method to simulate an accurate BER curve is applied with a satellite system and a theoretical basis for transmission of seismic data is discussed in this paper.%为了获得卫星通信系统传输地震数据的误码率,借助MATLAB软件仿真地震数据在高斯信道中的传输过程,建立卫星调制方式模型和高斯信道模型,使地震数据经过所建立的模型处理后,得到不同信噪比情况下的误码率。并分析卫星通信系统使用QPSK调制方式调制、传输地震数据对信号传送的影响。最后采用蒙特卡罗法仿真获取准确误码率曲线,为使用卫星通信系统传输地震数据提供了理论依据。