提出了一种利用光电方法解决多发导弹测角的技术途径。示踪器向地面发射的脉冲光被跟踪目标的摄像机接收, 解算出光斑和目标的偏角, 形成制导修正依据; 借助时序控制, 使示踪器发光与相机曝光同步; 设置各枚示踪器发光顺序, 使摄像机每个曝光期内, 只有目标或指定的导弹光斑进入, 通过对像机视频图片的编组, 可形成各枚导弹与目标的序列图片, 实现各枚导弹独立制导。通过试验, 在PM2.5指数为120的情况下, 传输距离达到9 000 m, 并实现100 Hz双光源切换, 编码精度达到1 μs。该模式可满足探测距离和导弹区分。

A technical approach to measuring angle of multiple missiles using photoelectric methods was proposed. A semiconductor laser was mounted on the tail of missile to form a large width light source for angle tracing. It fired a pulsed laser array which was capable of penetrating plumes to the ground. When the guidance camera tracked the target, it also acquired the laser from the tracer, and calculated the angle between the spot and the target to complete the continuous measurement of the missile’s angle, which was uploaded to the missile to form a closed-loop guidance. By timing control, the glow of the tracer and the exposure of the camera were synchronous. In each exposure period, light spots of only one missile could be received and the sequence pictures of each missile and target could be got, which supported the independent guidance of missiles through the marshalling of the camera video pictures. Test results show that the transmission distance reaches 9 000 m with the PM2.5 exponent of 120, the switching of 100 Hz dual light source can be realized and the encoding accuracy reaches 1 μs. This mode can satisfy the discrimination of detection ranges and missiles.