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一种八通道激光引信如图4所示,视场倾角60°,最大作用距离8 m,测距精度1 m,目标脱靶方位识别精度45°。与其配合的是八方位偏心起爆定向战斗部,中心起爆时的破片初速为2 100 m/s,距爆心6 m处的破片密度为85 枚/m2,偏心起爆时的增益区破片初速提高20%,密度提高15%。引战配合规律融合了主动导引头测得的弹目相对速度、引信测得的弹目距离、脱靶方位、目标类型,典型目标为战斗机和巡航导弹,制导精度为5 m(落入以目标中心为圆心的5 m圆内的概率为95%)。
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选取10条典型弹道条件(如表1所示)采用蒙特卡洛法开展引战配合仿真计算,单发杀伤概率P1的结果对比见图5~图7。
Trajectory number Target parameters Hit position parameters Name Vt/m·s–1 Height/m Range/m Course shortcut/m 1 BGM-109 240 500 14 972 2 500 2 BGM-109 240 1 500 9 900 1 000 3 BGM-109 240 1 500 17 458 800 4 BGM-109 240 3 000 5 564 0 5 BGM-109 240 1 500 15 090 500 6 F-22 300 1 000 9 070 3 000 7 F-22 300 1 000 14 055 1 000 8 F-22 300 3 000 8 900 0 9 F-22 300 5 000 7 977 1 000 10 F-22 300 1 500 10 020 150 Table 1. Typical encounter parameters for simulation
经统计,引入激光引信测得的弹目距离信息可使单发杀伤概率提高2.4%~10.2%,引入激光引信测得的脱靶方位可使单发杀伤概率提高2.1%~5.8%。若系统将BGM-109误判为飞机类目标,将导致单发杀伤概率降至0左右;若系统将F-22误判为导弹类目标,将导致单发杀伤概率下降50%左右。而辅以激光引信目标识别算法,或应用成像激光引信技术则可进一步降低误判概率。
Research on application of laser fuze for efficient fuze-warhead coordination in the air-defense missile
doi: 10.3788/IRLA202049.0403002
- Received Date: 2020-02-07
- Rev Recd Date: 2020-03-05
- Publish Date: 2020-04-24
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Key words:
- laser fuze /
- fuze-warhead coordination /
- air-defense missile
Abstract: The laser fuze can realize omnidirectional detection of missile targets through the circumferential multi-channel layout, its active-rotational-narrow pulse detection method can obtain the information about missile-target distance, miss azimuth angle and target type. At the same time, due to the characteristics of narrow beam and no side lobes, the fuze initiation zone has a small distribution area. All of these factors provide an important technical approach for efficient fuze-warhead coordination. Based on the analysis of the influence factors of air-defense missile fuze-warhead coordination, a fuze-warhead system scheme with eight-channel circumferential laser fuze was designed, combined with missile-target distance, miss azimuth, and target type. The fuze-warhead coordination simulation results in conditions of typical encounter parameters indicate that, the kill probability of single missile could be obtained to a maximum of 10% with the laser fuze information. It is useful for optimal design.