Abstract:

Development and construction W band ground-based long-range high-resolution imaging radar has great significance. It can satisfy the needs of carefully observation of space target morphological characteristics. Thus the ability of radar high resolution imaging of our country can be improved. The current situation is analyzed. The main technical indicators and technical features of W band radar are list. The frequency band character of W band is analyzed， which contains remote detection power， high resolution， high angle resolution and measurement accuracy， high relief of echo scattering property and so on. On this basis， the main plan points of our W band high-resolution imaging radar are proposed by referring to the technical feature of W band radar abroad. The points include broadband high power gyro traveling wave tube， beam waveguide antenna feeder， receiver， high speed data collector and memory， high reliability target acquisition and high resolution imaging technology and so on. Then the key technology and its domestic basis is analyzed related to the points above. In addition， the suggestion of primary research direction is proposed.

Key words: W band, radar, high resolution imaging, spectrum feature, key technologies, space object

摘要：

发展研制W波段地基远程高分辨成像雷达，对满足空间目标形态特征精细观测的需求，提高雷达高分辨成像测量能力具有重要意义。梳理了国外现状，列举了国外主要W波段雷达的主要指标和技术特点；分析了W波段雷达成像分辨率高、测量精度高等优势，以及雷达面临的系统损耗大和目标散射特性起伏快等挑战；在此基础上，借鉴国外W波段雷达的技术特点，提出了发展W波段高分辨成像雷达应采用的方案要点，包括大带宽高功率回旋行波管、波束波导天馈线、低噪声接收机、高速数据采集存储器、高可靠目标截获和高分辨成像技术等，针对以上方案要点所涉及的关键技术及其国内基础进行了分析，并给出了重点研究方向建议。

关键词: W波段, 雷达, 高分辨成像, 频段特性, 关键技术, 空间目标