CAJ | 학술논문

针对提高空间机动目标跟踪精度的机动检测问题，提出一种新型机动检测方法---χ2-β检测法。该算法以脉冲前后沿为研究对象，通过分析观测新息和常推力α-β动力学模型中辅助变量β的物理特性，给出脉冲机动前后沿检测判据。仿真实验比较了χ2检测法和β检测法的特性，结果表明：χ2检测法，对机动前沿的敏感性与采样点和机动阀值相关，较多的采样点与较大的机动阀值可以降低虚警率，但会增加检测延时，反之，可以减小检测延时，但会增加虚警率；β检测法，对机动后沿的敏感性与滤波跟随性能相关，在测量精度的保证下，可对机动后沿准确检测。两种方法联合起来，可有效检测多种形式脉冲机动，性能优于传统的机动检测方法，具有一定的工程实用性。
침대제고공간궤동목표근종정도적궤동검측문제，제출일충신형궤동검측방법---χ2-β검측법。해산법이맥충전후연위연구대상，통과분석관측신식화상추력α-β동역학모형중보조변량β적물리특성，급출맥충궤동전후연검측판거。방진실험비교료χ2검측법화β검측법적특성，결과표명：χ2검측법，대궤동전연적민감성여채양점화궤동벌치상관，교다적채양점여교대적궤동벌치가이강저허경솔，단회증가검측연시，반지，가이감소검측연시，단회증가허경솔；β검측법，대궤동후연적민감성여려파근수성능상관，재측량정도적보증하，가대궤동후연준학검측。량충방법연합기래，가유효검측다충형식맥충궤동，성능우우전통적궤동검측방법，구유일정적공정실용성。
Aimed at the problem that maneuver detection delay causes the uncertainty of tracking maneuvering target,a combined detection method (χ2 -β)was proposed for tracking maneuvering spacecraft with impulse power.By using Observation Innovation and α-βmaneuver dynamics model,the method detected the impulse maneuver to track maneuvering satellite.Through simulation and analysis,a comparison between the χ2 detection method with βdetection method was made.It proves that the sensitivity ofχ2 detection to maneuvering frontier correlate with the sampling points and motor threshold.The combined detection method does not incur much computation and,is superior to the traditional method, thus it has practicality in satellite engineering.