空中目标全姿态运动特性描述和参数分析系统

An all-attitude motion characterization and parameter analysis system for aerial targets

针对天基平台复杂背景下空中目标的探测需求，研究了空中目标在不同探测角度和空间位置下的运动特性，建立了天基探测场景下的运动模型。利用实际情况中目标的运动特性，分析探测的俯仰角、目标的起飞角、旋转角发生改变时的特点，实现目标辐射特性的建模仿真。在此基础上，利用MATLAB GUI软件平台，设计了基于目标运动特性的一体化天基红外特征描述和评价系统。结果表明：在中波波段，方向角270°～90°高于90°～270°的辐射强度，在俯仰角90°，起飞角0°时的辐射强度最强，旋转角对其无影响；在长波波段，俯仰角0°、30°，起飞角90°，旋转角90°时的辐射强度最强。该系统可以通过信号干扰比可以对系统探测的性能进行评价，也可以进一步确定系统探测分辨率和谱段等指标，为天基空中目标探测提供了技术支撑。

In order to meet the detection requirement of aerial targets in the complex background based on space-based platform, the motion characteristics of aerial targets in different detection angles and space positions was studied, and the motion model of space-based detection scene was established. This study used the motion characteristics of aircraft in the actual situation, and analyzed the characteristics of the angle of pitching, departure and the rotation of the target, and the modeling simulation of target radiation characteristics was realized. On this basis, an integrated all-attitude motion characterization and parameter analysis system was designed based on space-based platform using MATLAB GUI software platform. Results show that in the medium wave, the radiation intensity in direction angle from 270° to 90° above 90°to 270°, when the pitching angle is 90°, the strongest radiation at the angle of departure of 0°, rotation angle has no effect on radiation intensity. In the long wave, the radiation intensity is the strongest at the angle of pitching 0° and 30°, the angle of departure 90°, and the angle of rotation 90°. The system can evaluate the performance of detection by signal interference ratio, moreover, it can further determine the system indices such as the detection resolution and spectrum. The study provides the technical support for space-based aerial target detection.