Target flight mode identification with HFSWR

Fight altitude estimation of aircraft is a hotspot in high frequency surface wave radar (HFSWR) application which has not been resolved effectively. However, it is more meaningful and available to identify the flight mode of aircraft than cost too much time to estimate the target altitude in the engineering application. Based on the above viewpiont, an engineering method is proposed to solve the flight mode identification problem with the variation property of the propagation attenuation at different altitude intervals. This method can identify the target flight mode and evaluate the probability of the flight mode. Practical trials demonstrate that the proposed method can identifiy the target flight mode with a small quantity of measurement data, the aircraft flight mode can be identified correctly and the identification probability achieves more than 90%.