针对雷达高度表连续辐射、波束覆盖宽、易被截获的问题,研究了雷达高度表在载机不同飞行姿态、不同飞行高度下,被地面或海面无源探测系统的侦收威胁,给出了不同情况下的被截获时间。仿真结果表明:在10 000 m 高度平飞时,截获时间为24. 3 s,存在被无源探测系统形成多站截获定位的风险;在大机动条件下,机载雷达高度表被截获时间大大超过平飞时的被截获时间,需要对雷达高度表的辐射进行控制以降低被截获的风险。

The radar altimeter uses the continuous waveform and the beam is wide which result in the high interception. The interception of radar altimeter by passive detection system on the ground or sea surface under different flight attitude and altitude is studied, and the interception time under different circumstances is given. The simulation results show that the interception time is 24.3 s when the aircraft is at 10 000 m horizontal flight height. It would result in the multi-station passive location. Moreover, the interception time of the radar altimeter is much longer than that of the horizontal flight under the condition of large maneuver. Therefore, the radiation of the radar altimeter needs to be controlled for reducing the interception risk.

TN959.73