earth background meaning in English

地球背景

Abstract : have connected with ir target signature research , this paper deals with the principle and realization for the ir imaging terminal - guidance technology of an air - to - air missile in clutter backgrounds . the radiation signature of clutter earth backgrounds is analyzed , and the comprehensive analysis of the target ir radiation signature types of a military jet fighter as the mainly attacked target for air - to - air missile is gave . also we discusses the extraction and algorithm for target ir signature
文摘:本文结合对目标红外特性的研究,论述了在复杂背景条件下空-空弹红外成像末制导技术的原理和实现,分析了地面背景的辐射和散射的特征;综合分析了军用喷气式战斗机作为主要被攻击对象的红外辐射特性,并给出了目标红外特征提取的多种方法和算法