针对ＴＤ－ＬＴＥ　ＰＲＡＣＨ信道信号ＥＶＭ测量实现复杂、实时性差、测量精度不高的问题，提出一种基于随机接入信号相关性、频偏估计、相位估计以及硬件相偏校准的ＥＶＭ求解算法，可以快速准确地进行ＥＶＭ测量。通过对比和仿真，验证了该实现方案的高效性和可行性。该算法已在ＴＤ－ＬＴＥ射频一致性测试仪表中得到应用-Implementation for TD-LTE PRACH channel signal EVM measurement of complex, real-time differential measurement accuracy is not high, is proposed based on the random access signal correlation, frequency offset estimation, phase estimation and hardware EVM phase offset calibration algorithm can EVM measurements carried out quickly and accurately. By comparing and simulation to verify the efficiency and feasibility of the implementation program. The algorithm has been applied in TD-LTE RF Conformance Test instrument