新型电离层斜向探测雷达设计  

Design of a new kind of ionospheric oblique sounding radar

作　　者：石书祝[1] 赵正予[1] 李世鹏[1] 姜春华[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430079

出　　处：《华中科技大学学报（自然科学版）》2009年第7期14-17,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(40474066)

摘　　要：设计了一种新型电离层斜向探测雷达,该雷达采用脉间相位编码体制来实时测得斜向探测电离图和多普勒电离图,还利用全球定位系统(GPS)时间频率信号源和单片机来实现发射端和接收端的时间和频率同步,从而得到ns量级的时间同步精度和10-12量级的频率同步精度.该雷达的大部分功能都通过可编程软件来实现,通过加载相应的软件,雷达在进行斜向探测的同时,还实现了斜向返回探测.实际探测结果表明:在发射端和接收端相距1 200 km时,该雷达不仅得到了斜向探测电离图和多普勒电离图,还得到了斜向返回探测电离图和多普勒电离图.A ionospheric oblique sounding radar was designed, in which the oblique ionogram and Dopplerionogram were obtained in time by using the sounding system of interposed phase code. Global positioning system （GPS） signal generator of time and frequency, single chip microcomputer were adopted to achieve the time and frequency synchronization for the radar. The time precision at the level of nanosecond and the frequency precision at the level of 10 le can be got. A lot of function in this radar was implemented with programmable software. Through loading appropriate software, the ionospheric oblique backscattering sounding can be achieved at the time of oblique sounding. The observations demonstrate that the oblique ionogram and Dopplerionogram can be achieved over a distance of more just over 1200 km, and the backscatter ionogram and Dopplerionogram can also clearly be obtained.

关 键 词：斜向探测雷达 电离层 脉间相位编码 全球定位系统 软件无线电 斜向返回探测 

分 类 号：TN011.2[电子电信—物理电子学]