| 题名 | 星载瞬变光辐射探测系统信号采集与处理技术研究 |
| 作者 | 康静1 |
| 学位类别 | 硕士 |
| 答辩日期 | 2015-05-07 |
| 授予单位 | 中国科学院研究生院 |
| 授予地点 | 北京 |
| 导师 | 陈荣利 ; 王宏 |
| 关键词 | 瞬变光辐射信号 FPGA LED 数据采集与处理 |
| 学位专业 | 光学工程 |
| 中文摘要 | 随着空间探测越来越广泛的应用，各国都在积极研究天基空间探测系统，从而实现高精度、实时性、大范围的对地和对空观测。空间瞬变光辐射探测系统作为天基探测系统之一，用于监测大气层中各类闪电信号、空间辐射、爆炸光信号等，能够应用于多种科研领域并兼顾军民两用，因此得到了广泛的重视并具有长足的发展空间。 根据应用需要本文提出了一种针对空间瞬变光辐射探测系统的设计方案。首先对监测的目标信号和空间环境的背景信号进行了特性分析，介绍了空间瞬变光辐射能量探测系统的总体设计。其次以目标特性分析为基础，并根据后期对实验设备的需求，详细阐述了基于FPGA和LED实现目标信号模拟的设计方案和设计过程。再次，本文介绍了空间瞬变光辐射能量探测系统的硬件设计，重点讨论了信号采集与处理的软硬件设计，基于FPGA硬件开发平台，采用Verilog语言对控制和数据处理逻辑进行了硬件描述，通过功能仿真验证了逻辑设计方案，实现了瞬变光辐射信号数据采集、处理、存储及传输功能。 最终在实验验证阶段，通过目标信号模拟器、探测系统与下位机的板级联合调试，得出了最终的实验结果，表明系统能够实时探测到目标信号特征波形并监测系统工作参数，实现了预期的功能，验证了系统设计方案的可行性及工程应用性。 |
| 英文摘要 | With more and more widely using of space exploration, space-based detection system has been studied and developed by countries all over the world to achieve high precision, real time and large measuring range earth and space observation. As one of the space-based detection system, transient light signal detection system is used to monitor variety kinds of lightning signals, space radiation, light signal of explosion and so on. It can be applied to many research fields and be used in both military and civil, as a result it has received extensive attention and made significant space for development. Depending on application requirements, a design scheme of space transient detection system was proposed in this paper. Firstly, the features of the target light signal and the strong sunlight background were analyzed. The sub-system of the whole system named energy signal acquisition is introduced. Secondly, based on the analysis of signals and the requirement equipment during the further experimental process, the paper expounded design scheme of transient light signal simulator based on FPGA and LED in details. Thirdly, the hardware design of space transient light energy signal detection system was introduced, software and hardware design of signal acquisition and processing were mainly discussed. The control and data processing logic and timing sequence were described by the hardware description language Verilog based on FPGA hardware platform. According to the timing simulation, the logical design was validated and could realize function of transient light signal data acquisition, processing, storing and transmitting. Finally in process of experimental verification, the test results were obtained through combination of signal simulator, detection system and lower computer system. The results present that the system can real-time detect target signal and monitor the system parameters. The design proposal is feasible and also with widely engineering application. |
| 语种 | 中文 |
| 学科主题 | 电子电路 ; 空间探测器 |
| 公开日期 | 2015-06-30 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.opt.ac.cn/handle/181661/22972]  |
| 专题 | 西安光学精密机械研究所_研究生部 |
| 作者单位 | 1.西安光机所 2.中国科学院大学 |
| 推荐引用方式 GB/T 7714 | 康静. 星载瞬变光辐射探测系统信号采集与处理技术研究[D]. 北京. 中国科学院研究生院. 2015. |
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