摘要相位干涉仪测向具有测向精度高、结构简单和原理清晰等优点，已广泛用于侦察系统中。本文以相位干涉仪为研究对象，首先研究了双基线互质相位干涉仪、长短基线相位干涉仪和多基线多级互质相位干涉仪及其解模糊算法，通过讨论表明三者的内在联系；然后考虑通道幅相不一致、阵元位置误差、信号频率估计误差等非理想情况，在此基础之上，详细分析了三种干涉仪正确解模糊时的解模糊容差，分析表明在测向精度相同的情况下，多基线多级互质相位干涉仪及其解模糊算法的容差可以达到最大；最后，给出了外场试验的主要过程，并详细描述了试验数据的过程处理，处理结果表明三种算法的测向精度均可达到1°以内，只不过前两者因解模糊容差小而存在解模糊错误，后者解模糊容差大而能完全正确解模糊，更适合工程应用。19116
关键词 干涉仪 解模糊 误差分析 外场试验
毕业论文设计说明书（论文）外文摘要
Title    Direction finding of high precision interferometer                    
Abstract
Phase interferometer has the advantages such as high estimating precision,simple structure and clear principle which is widely used in the reconnaissance system.This paper set the research on phase interferometer and the first part is dedicated to the long-short baseline measurement, remainder theorem of bi—baseline system and the modulo conversion method and their algorithms of ambiguity solution.Through discussion,the inner relationship of the three algorithms hereinbefore is indicated,then the nonideal situation like baseline position errors,receiving channel mismatching error,the estimated frequency error,and other errors,are taken into consideration.Based upon this,this paper demonstrates the ambiguity solving tolerances of three algorithms when phase ambiguities are correctly solved.The analysis shows that the tolerance of modulo conversion method could reach the maximum when three algorithms have equal estimating precision.At the end, the main process of field experiment is shown and the process of data analysis is detailedly elaborated.The feedback from the experiment shows the direction finding accuracy of three algorithms could be controlled into 1°.the first two algorithms,due to the relatively small tolerance,contain error when solving the phase ambiguity .Thus the modulo conversion method is more applicable in engineering field  because it has a bigger range of tolerance and it therefore can solve the phase ambiguity correctly.
Keywords  Interferometer, Resolve Phase Ambiguity, Error Analysis, Field experiment
目   次
1  绪论    1
1.1  研究背景及意义    1
1.2  相位干涉仪测向的国内外研究和发展状况    1
1.3  本文研究内容和章节安排    3
2  相位干涉仪测向方法研究    4
2.1  引言    4
2.2  二阵元相位干涉仪测向原理    4
2.3  长短基线相位干涉仪测向原理    5
2.4  双基线余数定理相位干涉仪测向原理    6
2.5  模数转换测量来波方向原理    8
2.6  本章小结    11
3  非理想条件下的误差分析    13
3.1  引言    13
3.2  二阵元相位干涉仪测向误差分析    13
3.3  长短基线测向误差分析    15
3.4  双基线余数定理和模转换测向误差分析    16
3.5  仿真    19
4  相位干涉仪测向外场试验及其结果分析    25 高精度干涉仪测向方法研究+matlab仿真:http://www.751com.cn/tongxin/lunwen_10337.html