摘要
利用VC++6.0,基于短时傅里叶变换对弹头回波进行时频分析,得到弹头回波微动信息,利用兼容位图将回波微动信息进行可视化显示,采用DirectX三维显示技术,开发出弹头进动微多普勒特征分析及相应的弹头运动形态三维视景仿真软件。软件可提供弹头目标在不同雷达载频、自旋频率、锥旋频率、进动角等参数下的弹头理论微多普勒曲线,以及对回波时频分析得出的微多普勒曲线,实现了弹头目标三维视景与弹头微多普勒曲线的同步实时显示。软件运行表明:该软件运行流畅、理论推导结果与通过时频分析进行仿真验证的结果一致,软件对操作人员的响应迅速,三维视景显示与微动显示相一致。
Micromotion is one of the most significant characteristics that can distinguish warhead from de coys. A simulation software is built based on VC＋＋6.0 in the paper, which can be used to analyze the warhead＇s microDoppler feature and display threedimensional, visual view of warhead with micromotion. The software can acquire micromotion information from warhead echoes by means of STFT,in the mean while, the 3D visual view is obtained by DirectX technique. The software can provide both theoretical and practical microDoppler feature curves of warhead which vary from different radar carrier frequencies, spin ning frequencies, conning frequencies, precession angle, et al. The software works smoothly and responds quickly. The theoretical microDoppler curves are consistent with microDoppler curves of the echoes by timefrequency analysis method, and the 3D view scenes coincide with the micromotion greatly in display. Key words： microDoppler curve; 3D view scenes ; warhead; precession ; micromotion
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2013年第4期62-66,共5页
Journal of Air Force Engineering University(Natural Science Edition)
基金
国家自然科学基金资助项目(61172169)
国家自然科学青年基金资助项目(61201369
61102109)
关键词
微多普勒曲线
三维视景
弹头目标
进动
微动
micro-Doppler curve
3D view scenes
warhead
precession
micromotion
