【作者】 陈曦；

【导师】 赵正予；

【作者基本信息】 武汉大学 ， 空间物理， 2004， 硕士

【摘要】 电离层斜向返回探测系统的主要功能是对电离层进行实时探测，获取电离层参数变化状态和高频信道传输特性，同时也可以用作频率管理系统，它是研究电离层状态变化和和高频信道传输特性的有力手段。作者所在的科研小组主要从事一种新型电离层探测雷达的研制，并已取得阶段性进展。作者在整个雷达的研制过程中，主要承担并完成了如下工作： 1、 雷达系统中FPGA时序产生模块及m序列发生器的软硬件开发，这是确保整个雷达系统正常工作的关键组件。 2、收发分离天线体制下，天线开关的设计与实现，并提出了收发共用天线体制下高频天线开关的设计方案。 3、通过DSP端程序的改进，实现了雷达p’-f连续探测的功能，这是探测电离层状态变化最有效的方式之一。 4、通过系统的闭、开环实验，获得了若干有重要意义的结果，验证了作者上述工作的正确性。更多还原

【Abstract】 The ionospheric oblique backscattering sounding system (IOBSS)’s function is to explore ionosphere in real-time, it is one of strong methods for researching the state of the ionosphere and the characteristics of the HF communication channel. The research groups of the ionosphere-lab have devoted themselves to design this radar and have obtained some moment progresses. In the process of designing the radar, the author has take on and has accomplished these tasks:1. Has developed the FPGA ’s m-sequence and timing module, which is the important component of the radar.2. Has developed the antenna switch, which is used in T-R separate antenna system, also put forward the scheme of designing the switch for T-R community antenna system.3. Has modified the software of DSP and has realized the function of p-fdetection in series.4. Has organized the close-loop and open-loop experiments of the IOBSS and has got some important results which verify the success of the author’s job.更多还原