地电台的噪音强度及仪器对噪音的抑制能力决定了地电测量的精度。应用地电自动测量系统(ATS)对黄子洞台的地电噪音进行了实际测量,分析计算了该台各道的噪音强度,信噪比及ATS对噪音的实际抑制能力,进而对ATS用于该台地电阻率测量时各道所能获得的期望观测精度进行了估价,获得了观测精度可达到10~(-4)的结论,这一理论计算与实际观测结果非常接近。 The noise level of the radio station and the ability of the instrument to reject the noise determine the accuracy of the geoelectric measurement. The geoelectric noise of Huangzitong station was measured by ATS. The noise intensity, signal-to-noise ratio (SNR) and the actual ATS noise suppression ability of each station were analyzed and calculated. Then, The expected observation accuracy of each track during the terrestrial resistivity measurement is evaluated, and the observation accuracy of 10 ~ (-4) can be obtained. This theoretical calculation is very close to the actual observations.