目标信噪比 meaning in Chinese
sirtarget
target-clutter ratio
Examples
- It is difficult for moving dim target to tracking and detect because the signal noise ratio ( snr ) of target is low and it has not texture etc . first of all , this paper introduces the state of researches of dim target detection and tracking in domestic and abroad
本文重点研究了弱小目标检测及其跟踪的方法。研究低信噪比弱小目标的实时检测及跟踪算法,其困难主要为:目标信噪比低,无纹理特征。 - Based on the continuity of target ’ s trajectory , a detection algorithm formed by modified dpa and track association algorithm is presented . the modified dpa energy integration algorithm with a confined search field is developed to solve the target energy pervasion problem
针对直接dpa能量累加算法存在能量扩散的缺点,采用限定搜索窗的dpa能量累加算法,在减小目标能量扩散程度的同时,提高了累加图像后的目标信噪比。 - After analyzing the theory of mtdi and setting up the model of moving target echoes , the dissertation discusses in detail the effect of moving target doppler center frequency and doppler rate on the conventional sar image . it also analyzes detailedly the range migration of moving target from time field and frequency field and provides migration model in both fields . after that , it divides algorithms of mtdi into several classes , analyzes the influence of signal - to - noise on the detection results and gives the flow chart of moving target imaging processing
本文的主要贡献包括： 1 、建立了运动目标回波散射模型，深入探讨了进行常规sar成像时，动目标的多普勒中心频率和调频率对动目标图像造成的影响；从时域和频域两方面详细分析了由于目标运动造成的距离徙动效应，建立了距离徙动模型；然后研究了动目标检测原理，并对现有的检测方法进行分类，使之更加系统化；详细分析了动目标信噪比对检测结果的影响，给出了sar系统动目标成像流程图，指出了动目标成像中的关键环节。