单脉冲成像技术发展现状综述

In recent years, with the increasing diversification of mission requirements, radar imaging has expanded from conventional side-looking and squint-looking modes to the forward-looking mode. In this regard, the monopulse imaging method offers several advantages, including its forward-looking imaging capability, real-time processing ability, and effective anti-jamming performance. These features can help efficiently overcome the problems faced by conventional imaging methods, i.e., low azimuth resolution and Doppler ambiguity in the forward-looking region. Hence, this method has emerged as a key solution to these challenges. This study first explores the distinction between monopulse tracking and monopulse imaging, followed by a systematic review of the existing technical approaches and evaluation metrics for monopulse imaging. Subsequently, the performance of different methods is analyzed, and specific applications of monopulse imaging technology in various scenarios are introduced, including three-dimensional imaging, moving target localization and imaging, and multi-view image fusion. The paper ends with a discussion of the development trends of monopulse imaging technology and an analysis of future research directions, such as imaging quality improvement and the expansion of the application scope.