毫米波段连续波多普勒测速/测距技术研究
关键词 多普勒频率 多普勒频移变化率 角度变化率 测速 测距
毕业论文设计说明书（论文）外文摘要
Title Research of Continuous wave Doppler Velocimetry and Ranging Technology in Millimeter wave band
Abstract
This article is based on research studies of continuous wave Doppler velocimetry and ranging technology in millimeter wave band, and verified by simulation. Conventional CW Doppler radar was used to identify the target speed. Since the absolute radial is unlikely between radar observers and moving target, there is a certain slant range, and makes the characteristics about Doppler frequency changing, we will be carried out in accordance with the characteristics to ranging and direction finding. In this paper, to measure velocimetry and simulation based on the relationship with the radial velocity and Doppler frequency .Ranging using single line Doppler ranging method. The method according to the relationship between angle variation rate and difference of Doppler frequency, can be obtained the distance of measured object by differentiating. This paper comparative analysis and simulation the results of ranging for different distances and different angle.
Keywords Doppler frequency, Doppler changing rate, Angle change rate, Velocimetry, Ranging
目 次
1 绪论 1
1.1 研究背景和意义 1
1.2 研究现状 1
1.3 本论文主要内容和工作安排 2
2 测速技术研究 4
2.1 引言 4
2.2 多普勒效应 4
2.3 连续波多普勒测速原理 6
2.4 仿真验证 8
2.4.1 测速模型 8
2.4.2 仿真方法 9
2.4.3 建立仿真 9
2.5 多普勒测向技术 12
2.6 小结 14
3 测距技术研究 15
3.1 引言 15
3.2 几种常用测距法 15
3.2.1 脉冲测距法 15
3.2.2 调频测距法 17
3.2.3 相位测距法 18
3.3 基于多普勒角度变化率的机载测距原理 19
3.4 基于多普勒频率的机载测距原理 20
3.5 仿真验证 22
3.5.1 测距仿真流程图 22
3.5.2 建立测距仿真 23
3.6 小结 26
结 论 27
致 谢 29
参考文献30
1 绪论
1.1 研究背景和意义
雷达即是利用无线电对目标进行定位、测探和识别以得到目标的位置信息和其他情报信息的系统。它的基本原理是对目标发射一个信号波形，这个信号被目标反射回来得到回波，回波中包含了目标的信息，经过对回波的处理就能得到物体信息。雷达技术经过多年研究与实践，目前已经广泛应用在多个领域当中，出现了多种雷达。按其体制分类有如相控阵雷达、合 雷达、多普勒雷达等[14]。