【摘要】 该文以真实测井数据为遥传对象，在高斯白噪声为干扰噪声情形下，针对不同信噪比，分别就二进制振幅、频率及相位键控3种典型数字调制方式进行了井下遥传数值模拟实验研究。模拟结果表明，振幅键控对误码率的容忍度最高，其次为相位键控，频率键控的误码率容忍度最低。随误码率的增大，3种调制与解调方式的输出曲线都先后经历了无明显变化、出现离散性突变及发生连续性突变3个变化阶段，其中振幅及相位键控的离散突变点都是从高数值曲线段开始发生，而频率键控的离散突变点却从变化比较平缓的曲线段开始发生。更多还原

【Abstract】 Telemetry simulation experiment study of three typical modulation modes,binary amplitude and frequency &phase keying,is carried out under different signal-noise ratio condition,that take the actual logging data as the telemetry object and the Gaussian white noise as the interference noise. The experimental results indicate that binary amplitude keying has the highest tolerance for bit error rate,binary phase keying is the second done,and binary frequency keying has the lowest tolerance to bit error rate. And the output curves of the three modulation and demodulation modes have all undergone three stages,no obvious change,discrete mutation and continuous mutation. However the discrete mutation points corresponding to binary amplitude keying and phase keying start from the high value curve segment with the increase of bit error rate,on the contrary,the discrete mutation point corresponding to binary frequency keying starts from the curve segment with relatively gentle change.更多还原