高频地波雷达飞行目标高度属性判别

高频地波雷达飞行目标高度估计一直是工程上尚未解决的热点问题。然而在实际工程应用中,更加关心的是被探测到的飞行目标是高空还是低空的高度属性问题,而且飞行目标高度属性判别研究比精确估计目标的具体飞行高度更有实际应用意义,且更容易在实际系统中实现。基于上述工程设计思想,提出高频地波雷达飞行目标高/低属性判别工程化方法,首次解决了高频地波雷达飞行目标高度属性判别问题。所提方法利用垂直极化电波在高空和低空高度区域的不同电波传播衰减特性构建高度属性判别算法,不仅判别目标高度属性,而且给出高度属性判别可信度。实测数据处理表明,所提方法能够利用少量观测数据快速判别飞行目标高度属性,可信度达到90%以上。

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%.