甚长基线近区时差测向联合定位及特性分析

摘要

The cooperative passive guidance by two stations is a brand-new anti-radiation guidance system,characterized by high concealment and strong anti-jamming capability.To cooperative passive target locating problem in the terminal guidance phase of this application,a passive location model of Time Difference of Arrival ( TDOA) direction finding nearby very-long baseline was constructed.The change rule of ranging accuracy with the direction angle between the object and station is thoroughly analyzed with this model,as well as the location accuracy that can be achieved in various attack directions.With this result,the optimal condition for missile attack position in the passive terminal guidance phase was analyzed,increasing the ac-curacy of passive location.Finally,validity of the theoretical analysis was verified through simulation,thus providing a new reference for such applications as cooperative passive guidance by two stations and anti-ra-diation precision attack.%双站协同无源制导是一种全新的反辐射导引体制，具有隐蔽性高、抗干扰能力强等特点。针对此应用中末制导阶段的目标无源协同定位问题，构建了甚长基线近区时差测向无源定位模型，分析了在这个模型下测距精度随测向夹角的变化规律，以及在各种攻击方向上所能达到的定位精度，并利用这个结果分析了无源末制导阶段导弹攻击阵位的优选条件，提高了无源定位精度。最后通过仿真验证了理论分析的有效性，从而为双站协同无源制导和反辐射精确打击等应用提供了新的参考。