| 题名 | 相干激光测高技术研究 |
| 作者 | 杨馥 |
| 学位类别 | 博士 |
| 答辩日期 | 2010 |
| 授予单位 | 中国科学院上海光学精密机械研究所 |
| 导师 | 陈卫标 |
| 关键词 | 相干测高，线性啁啾调制，伪随机码调制，光子计数 |
| 其他题名 | Study of Coherent Laser Altimeter |
| 中文摘要 | 激光高度计搭载在机载或星载平台上可快速、高精度地获取飞行覆盖区域的三维地形图，因此在空间探测、地形测绘、灾害评估、目标识别等方面发挥重要作用。目前基本所有的激光高度计有效载荷都采用了传统的基于脉冲激光飞行时间的直接测量方法，即发射巨脉冲，采用时间间隔测量技术来获取距离信息。这种方式技术成熟、结构简单，但是在高脉冲能量下，提高激光重复频率的难度和风险大，难以进一步提升空间分辨率。而提高空间分辨率是激光高度计的发展趋势。除了进一步提高传统脉冲测距的能力外，一些新的测量方案不断被提出来。本论文就是在此技术背景下展开的. |
| 英文摘要 | Equipped in the airborne or spaceborne platform, the laser altimeter can obtain the three dimension map of the flight overlay area quickly and accurately, so it plays an important role in the field of space detection, topographic mapping, disaster assessment, target recognition, and so on. Currently, almost all of the laser altimeter payloads adopt the traditional time of flight direct detection method. It means that the laser emits a huge pulse, and the target height is got through the time interval measurement. This detection method owns mature technology and simple structure. However, it is difficult and risky to improve the pulse repetition frequency due to the large pulse energy, which results in the low detection spatial resolution. Improving spatial resolution is a trend of laser altimeter development. Besides attempting to improve the performance of traditional direct detection method, many new detection mechanisms are proposed. This thesis is developed just in this background, and the main research work contains the following parts. |
| 语种 | 中文 |
| 内容类型 | 学位论文 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/15841]  |
| 专题 | 上海光学精密机械研究所_学位论文 |
| 推荐引用方式 GB/T 7714 | 杨馥. 相干激光测高技术研究[D]. 中国科学院上海光学精密机械研究所. 2010. |
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