1) equivalent number of looks
等效视数
1.
Evaluation method of jamming effect on ISAR based on equivalent number of looks;
基于等效视数的ISAR干扰效果评估方法
2.
To evaluate the quality of coherent speckle in SAR images fast, equivalent number of looks (ENL) was selected as the evaluation criterion, the two testing methods of single sample parametric hypothesis and double sample parametric hypothesis were proposed, and the experiments were done using the two sets of available image data.
为了快速评估合成孔径雷达(SAR)图像的相干斑质量,选取等效视数(ENL)作为评估指标,给出了单样本参数检验和双样本参数检验两种方法,并用两组实际图像数据进行了实验。
2) ENL
等效视数
1.
The problem of using equivalent ENL and image dynamic range to measure the jamming effects is also discussed.
根据SAR成像工作原理以及有源干扰对SAR作用的特点,利用SAR图像质量评估指标,提出用主观评估、点目标成像以及散射区域目标成像的方法来评价有源干扰对SAR的干扰效果,并就等效视数和图像动态范围对干扰效果的度量问题进行了探讨。
3) the model of equivalent number of looks
等效视数模型
1.
At first, shadow detection through the RCS (radar cross section) reconstruction algorithm based on the model of equivalent number of looks is described, and then by nonlinear iterated process, the target detection is achieved.
首先给出了基于等效视数模型的图像RCS（radar cross section）重构算法进行阴影检测,然后通过非线性积累,达到目标检测的目的。
4) equivalent squint
等效斜视
5) equivalent squint wavenumber domain algorithms
等效斜视波数域算法
6) equivalent number of looks(ENL)
等视指数
补充资料：比等效百万吨数