Research on the Influence of Stations Distribution to HF TDOA Geolocation Accuracy

The time difference of arrival (TDOA) geolocation technology in High Frequency (HF) propagation achieves accurate positioning due to various factors, including time difference measured by receiving stations, ionospheric parameters, and accurate propagation path mode et. The distribution of short-wave receiving stations is also an important factor affecting the geolocation accuracy. The problem of the stations distribution to the TDOA geolocation of HF propagation channel realized by Quasi-Parabolic (QP) ionospheric model is simulated. The results show that the geolocation result of the symmetrical distribution of the substations is better, and the main station falls on the mid-perpendicular line of the sub-stations.