Abstract: As a network hub and active relay do not restrict remote communication, the high frequency (HF) communication system has received extensive attention in military confrontation and civil spectrum monitoring. As we all know, high frequency long-distance transmission is realized by ionospheric reflection and a typical non-line-of-sight (NLoS) transmission mode. In addition, as an important part of the electronic countermeasure, passive location has always been a research hotspot. Therefore, how to achieve effective geolocation in the NLoS scene is an urgent problem to be solved in the shortwave communication system. In this paper, a new high frequency time difference of arrival (TDOA) location algorithm is proposed. The algorithm is divided into three parts: TDOA extraction, coarse location and precise location. Without ionospheric parameter information, precise location can be achieved. In order to prove the effectiveness of the method, the simulation results and field results are presented in the paper. The results show that the proposed algorithm is simple and practical, and its accuracy is better than 3%. The proposed algorithm provides a new idea and direction for the development of high frequency geolocation.