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摘要传统的连续波多普勒雷达只能用于测量目标的速度，通过测量不同时段多普勒频率的变化率进行多普勒测距和测向。实际中多普勒频率具有不断变化的特性，根据多普勒频率的变化，可以利用数学方法计算得到目标距离和方向。65558
连续波雷达在短距离应用中能够提供较高精度的速度和距离信息。在近程雷达系统或次级雷达中，连续波雷达与脉冲雷达相比具有独特的优点。特别是随着当今世界微波固态器件的发展，利用连续波雷达能使雷达更为简单。
本文根据连续波雷达工作原理，做以下分析：连续波雷达测距以及测距精度的提高；连续波雷达测速以及测速精度的提高；连续波雷达定位测向。通过数学方法计算得到目标的距离和方向。用软件进行仿真，得到一定方向和速度目标的距离和速度，和方向的仿真结果。
毕业论文关键词 连续波 多普勒雷达 测速 测距 测向
毕业设计说明书（论文）外文摘要
Title Research of continuous wave Doppler radar range And direction finding technology
Abstract
The traditional continuous wave Doppler radar can only be used to measure the speed of the target.Doppler ranging and direction-finding by measuring the rate of change of the Doppler frequency of different periods.But actual Doppler frequency change constantly and according to the change of the Doppler frequency , target distance and direction can be calculated using mathematical methods.
Continuous wave radar can provide higher accuracy information of speed and distance in a short-distance applications.In the short-range radar system or secondary radar , continuous wave radar has the unique advantage compared to pulse radar.Especially ,with the development of solid-state microwave devices in today's world , the use of continuous wave radar to make the radar more simple.
According to the continuous wave radar working principle, the main content of the paper as follows:First,continuous wave radar ranging and ranging accuracy improvement;Second,continuous wave radar speed measurement and velocity accuracy improvement;Third,continuous wave radar positioning direction. To obtain the distance and direction of the target by mathematical methods.Conducting simulations to get results of a target with a certain distance and speed.
Keyword Continuous wave Doppler radar Velocity measurement Ranging Direction finding.
目次
1 绪论 1
1.1 引言 1
1.2 发展过程 2
1.3 研究的意义 3
1.4 本文主要任务 3
2 测速技术的研究 5
2.1 多普勒效应 5
2.2 多普勒雷达测速 7
2.3 小结 10
3 测距技术的研究 11
3.1 目标距离的测量 11
3.2 多普勒相位法测距 13
3.3 双频比相测距方法 17
3.4 多频比相测距方法 20
3.5 机载测距