CAJ | 학술논문

经典的参量型恒虚警率检测器只在特定的背景环境下才能得到较高的检测性能,而低空监视雷达的工作环境较为复杂,需要一种对杂波环境具有较强稳定性的检测器.为此,对传统的检测技术进行了改进,提出了一种新的分块恒虚警率检测技术.该技术通过对参考单元进行适当分块来提高对不同环境的适应能力,弥补了传统恒虚警率检测技术需要杂波背景分布的不足,增强了检测算法的通用性.给出了该算法在均匀杂波环境和杂波边缘环境下的虚警概率理论公式.计算机仿真验证了该技术的可行性和有效性.
경전적삼량형항허경솔검측기지재특정적배경배경하재능득도교고적검측성능,이저공감시뢰체적공작배경교위복잡,수요일충대잡파배경구유교강은정성적검측기.위차,대전통적검측기술진행료개진,제출료일충신적분괴항허경솔검측기술.해기술통과대삼고단원진행괄당분괴래제고대불동배경적괄응능력,미보료전통항허경솔검측기술수요잡파배경분포적불족,증강료검측산법적통용성.급출료해산법재균균잡파배경화잡파변연배경하적허경개솔이론공식.계산궤방진험증료해기술적가행성화유효성.
Only in the specific background environment can the classic parametric constant false alarm rate (CFAR)get higher detection performance,but low-altitude surveillance radar is working in more complex envi-ronment and it needs a more stable detector for clutter environment. For this reason,the traditional detection techniques are improved,moreover a new CFAR detection technique,designated as divided block CFAR (DB-CFAR),is proposed. The technique improves its adaptability for different environment by dividing appropriately the reference window to make up for that the traditional CFAR detection technique needs the distribution of clut-ter background and enhance the universality of the detection algorithm. Its theoretical formula of false alarm rate in homogeneous background and clutter edge environment is derived. The result of computer simulation confirms the technique′s feasibility and effectiveness.