编队目标 meaning in English
formation target
Examples
- A new algrithm of probability of antiship missile capturing target among ship formation
反舰导弹捕捉编队目标概率的新算法 - + as the scale of cross range image is dependent on the coherent accumulation and the rotation angle , we must scale to the c
为了更准确进行架次的识别，还可以进行长时间对编队目标的动态横向一维像进行观测。 - Due to the short distance among the planes which fly in a group , the conventional low resolution radar can not distinguish them in both distance and azimuth ? if we use the technology of isar to resolve the difference among doppler frequency of the targets and obtain a fine resolution cross - cross image , we may separate them , but a long time of coherent processing is needed < , for the formation targets , it can be approximately divided to rigid body and nonrigid body , so for the formation targets , that can be regarded as rigid which has a relative position and an identical movement , can be approximately considered as a large target , and be compensated by translational phase with the rule of minimum entropy , but for the most those cannot accord with the approximation of rigid , being the doppler - frequency of the aim is linear changed , by the relax method with short data , increases the resolving performance of multiple target to the aim in the frequency domain , since cross - range resolution is based on the accumulative time , so it is greatly improve the resolution to formation targets by the instant cross - range image which produced by radon - wigner transformation
低分辨isan成像及干涉技术应用研究一因此直接无法分辨编队目标的架数，我们借鉴isar的技术，通过较长时间的相干积累，在多普勒频域上对目标进行分辨。而对于编队目标，可分为近似刚性的多目标和非刚性的多目标，所以对于可以近似为刚体的编队目标相对位置固定，运动方式一致，可以近似看作一个大目标，采用最小墒准则对平动相位的进行补偿，但是大多数并不满足刚体近似的编队目标，由于目标在相干积累时间的多普勒频率近似呈线性变化，通过对较短数据利用relax的时频分析方法，提高了频率域上目标分辨的性能。由于横向分辨率取块于横向积累时间，所以利用radnwigner变换得到瞬时的一维横向距离像大大提高了对编队目标的分辨，对仿真和实测数据的大量分析结果表明此方法的有效性和可行。 - As the targets flying in groups may spread over several range of cells and their doppler frequencies are time * . varying , a scheme of target number detection in groups on a conventional low * . resolution radar is proposed based on a time * . range * . doppler image cube which is constructed by substituting a time * . frequency transform for the fourier transform in the conventional range * . doppler imaging
针对实际编队目标在距离上的分布特性和目标多普勒频率的变化规律，利用联合时频变换代替传统傅立叶变换，建立目标时间-距离-多普勒立体像，提出一种基于立体像的目标架次检测方法。