Abstract: HF hybrid sky-surface wave passive radar can be affected by many factors including the ionosphere, the ocean surface status, the electromagnetic environment of short-wave band, the transceiver configuration, and so on. Contraposing localization problem of the new passive radar system, we bulid a model of target location under the hybrid sky-surface wave propagation mode. A new positioning method based on the direction of arrival in elevation of direct wave is proposed. The relationship between positioning accuracy and target bearing is also analyzed from the two aspects of measuring error theory and geometric dilution of precision. Simulation results demonstrate that with simplified localization model, the proposed algorithm can obtain good localization accuracy in a certain area. Based on the above discussion, some engineering solutions to improve the localization accuracy are suggested.