基于多光谱辐射特性的高速目标识别定位系统

发布时间：2018-05-29 02:08

本文选题：目标识别 + 多光谱特征分析　；参考：《光谱学与光谱分析》2014年11期

【摘要】：为了实现高速目标的快速识别及定位,采用多光谱辐射与声定位技术联用,在被动探测的状态下快速获取被测目标爆炸波的光谱特性及声特性,从而分析判断其种类、位置等重要参数信息。推导了多光谱辐射目标识别检出公式,计算了采用激波声定位方法获取光程距离的精度及合理的积分时间。实验分别采用5.56mm北约弹、7.62mm 56式步枪弹、12.7mm 54式机枪弹作为被识别目标弹丸,通过丹麦BK公司的2209脉冲声压计完成声压峰值采集,获得了三种目标弹丸的速度、距离信息。由静态傅里叶变换干涉系统与ICX387AL型CCD完成干涉条纹的采集,再将获得的光程信息代入多光谱目标识别算法中,从而通过目标的光谱特性识别弹丸的类型。实验结果显示,5.56mm北约弹的三个特征波长位置幅值接近,966nm位置处幅值最大;7.62mm步枪弹在935nm位置上幅值最大,其他两个位置上幅值相近;12.7mm机枪弹的三个波长呈阶梯状分布。在多次测试过程中,经光谱标定、特征波长提取等方法对采集得到的三组光谱数据均可成功识别弹丸的种类并给出目标位置,满足设计要求。
[Abstract]:In order to realize the fast identification and localization of high speed target, the multispectral radiation and acoustic localization technology are used to obtain the spectrum and acoustic characteristics of the explosive wave of the target under passive detection, and the types of the target are analyzed and judged. Position and other important parameter information. The detection formula of multi-spectral radiation target is derived, and the accuracy and reasonable integral time of obtaining optical path distance by shock acoustic positioning method are calculated. 5.56mm NATO 7.62mm 56 rifle ammunition 12.7mm 54 machine gun was used as the target projectile respectively. The peak sound pressure was collected by the 2209 pulse sound pressure meter of Denmark BK Company, and the velocity and distance information of three target projectiles were obtained. The interference fringes are collected by the static Fourier transform interferometric system and the ICX387AL type CCD, and then the optical path information is added into the multi-spectral target recognition algorithm, and the projectile type is identified by the spectral characteristics of the target. The experimental results show that the maximum amplitude of 7.62mm rifle projectile in the 935nm position is the largest at the three characteristic wavelength positions of 5.56mm NATO projectile, and the three wavelengths of the other two positions are similar to 12.7mm machine gun projectiles. In the course of many tests, the three groups of spectral data obtained by spectral calibration and characteristic wavelength extraction can be used to identify the projectile and give the target position successfully, which can meet the design requirements.
【作者单位】：中北大学电子测试技术国防科技重点实验室;
【基金】：国家自然科学基金项目(60637010) 总装备部国防科技基金项目(9140C120402120C12055)资助
【分类号】：TN911.7

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