面向GMTI任务的系绳式InSAR系统展开研究

发布时间：2018-06-14 18:59

本文选题：系绳式InSAR系统 + GMTI任务　；参考：《航空学报》2016年10期

【摘要】：研究了短绳系式合成孔径雷达干涉技术(InSAR)系统面向地面动目标检测(GMTI)任务时的展开问题。使用系统的三维动力学模型,首先分析系统在平衡位置附近的稳定性,确定系统执行GMTI任务时面临的问题。结合GMTI任务需求确定系统短系绳情况时的展开方式,使用粒子群算法对系统初始分离速度和方向进行优选,使系统在展开结束时恰好摆动到水平方向。在展开完成后对系统施加阻尼控制和喷气控制,使系统长期处于水平方向附近,以获取期望顺轨基线,最后通过数值仿真验证。结果表明:考虑展开机构静摩擦力时,在优选的初始状态下无控展开,系统能够到达目标位置,且在稳定控制下能够长期保持顺轨基线大于99.6m。
[Abstract]:In this paper, the problem of GMTI deployment for ground moving target detection in short rope synthetic Aperture Radar interferometry (InSAR) system is studied. Using the three-dimensional dynamic model of the system, the stability of the system near the equilibrium position is analyzed firstly, and the problems faced by the system in performing the GMTI task are determined. According to the GMTI task requirement, the expansion mode of the system with short tether is determined. The particle swarm optimization algorithm is used to optimize the initial separation speed and direction of the system, which makes the system swing to the horizontal direction at the end of the system. Damping control and jet control are applied to the system after development, which makes the system stay near the horizontal direction for a long time in order to obtain the expected trajectory baseline. Finally, it is verified by numerical simulation. The results show that when the static friction force of the unfolded mechanism is considered, the system can reach the target position without control in the initial state of optimal selection, and the baseline along the track can be maintained longer than 99.6 m under the stable control.
【作者单位】：哈尔滨工业大学航天学院;
【基金】：国家自然科学基金(91438202)~~
【分类号】：V443.2

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