机载光电跟踪系统搜索策略研究

Study of search strategy on airborne optical tracking system

评价未来空战系统作战能力的主要因素包括如下方面：发现目标的能力、可发现的范围、发现的概率。本文以某机载光电跟踪系统为对象,研究在具有诸多约束条件下的一种激光搜索策略,在保证不漏扫,满足探测概率的前提下,使系统搜索范围最大,并适应载机上的纯惯性状态下惯导的最大导航误差。本文建立了可有效减少重复作业和无效搜索时间,充分利用激光探测器的有效视场,对目标进行较高效率的等效＂一＂字形激光搜索策略模型,给出并分析了模型的边界条件。并给出了在确定的边界条件下数学模型的仿真数据。分析结果表明：在保证不漏扫,满足探测概率的前提下,在2000 m以下的高度,采用N=3,L=12 km的光斑搜索范围,基本能够覆盖惯性3σ导航误差范围。若导航误差取1σ,则在1500~6000 m高度都可覆盖。若想获得较高的搜索效能,需对搜索速度、重叠系数等因素综合考虑,而提高激光重复频率尤其重要。

Evaluation of future air combat capability includes the following main factors： the ability of finding the target,the range can be found in,the probability of discovery.In this paper,an airborne optical tracking system as the object to study a laser-search strategy with many constraints,to maximize range of search with no leakage search and to meet the probability of detection,to adapt to the maximum navigation error of the pure inertia INS on the airborne.Establish a highly efficient search strategy model which can effectively reduce duplication of search and invalid search time,take advantage of the effective field of the laser detector,and analyzed the model boundary conditions.The paper shows the simulation data of mathematical model with the determining boundary conditions.Under the height of 2000 m,to ensure no leakage search and search probability,the N=3,L= 12 km laser spot search can cover the 3σ navigation error range.If navigation error is 1σ,this can be covered in 1500 ~ 6000 m altitude.To get higher search performance,the factors include search speed,overlap coefficient,especially Laser repetition rate should be taken into account.