In this dissertation , at first , introducing the theory of linear frequency modulated continuous wave radar . the designing of the signal processing hardware platform is basing on the algorithm 在本文中,首先介绍了线性调频雷达的工作原理和相关的理论,根据这些算法要求,来设计信号处理的硬件平台。
In the information environment of radar there are some signals such as regular and binary phase modulated pulse signal and linear frequency modulated signal are used widely 在雷达信号环境中,最常见的信号包括常规脉冲调制信号、脉内二相编码信号以及线性调频信号。对这些信号的载频测量在电子战中具有重要意义。
Many new uwb radar signal parameter estimation algorithms based on sub - nyquist sampling have been deeply and widely studied in this dissertation . linear frequency modulated ( lfm ) signal is concerned here 本论文针对超宽带雷达信号中主要的信号形式?线性调频信号在低信噪比和欠采样的条件下的参数估计进行了分析、仿真和探讨。
Yasuyuki ikeda , satoru yoneyama , motoharu fujigaki , et al . absolute phase analysis method for three dimensional surface profilometry using frequency modulated grating , society of photo - optical instrumentation engineers [ j ] . opt eng , 2002 , 42 ( 5 ) : 1249 周聪玲.基于快速标定方法的三维物体表面轮廓测量系统的研究[ d ] .天津:天津轻工业学院. 2002
This paper presents an integrated comparison of object - detecting techniques , the techniques that base on millimetre wave frequency modulated pulse - doppler radar is chosen on the basis of the idiographic demand of the recws 通过对车载目标探测技术的综合比较,结合本报警系统的具体要求,选用了车载毫米波调频多普勒雷达目标探测技术。
In present , our country had many achievements in research in linear frequency modulated continuous radar , but if we want to turn those achievements into practicality application , it need one efficiency hardware platform 当前国内对线性调频雷达的研究也取得了许多成果,但是要把这些研究成果转化为工程应用,却需要一个有效的硬件平台。
Briefly , here are main topics of this dissertation : ( 1 ) the relation between the resolving power of the linear frequency modulated continuous wave radar and the linearity of linear frequency modulation signal 同样,输出数据也可以通过双口ram和pci接口输出。本文的主要工作包括: ( 1 )介绍了线性调频雷达距离分辨力和调频线性度的关系。
On the other hand , the irls algorithm is employed to design mismatched filters for other signals , such as linear frequency modulated chirp . the methods of improving tolerance of low doppler shifts are given finally 同时我们还将迭代加权最小二乘算法推广应用于其它信号形式的脉冲压缩滤波器设计,并提出了有关多普勒频率性能的改善方法。
Because frequency - shift signal is a kind of modulation signal , it ' s waveform is two ac sine signal of alternating i . e . upper frequency and lower frequency which was generated by low frequency modulating middle frequency 由于移频信号是一种调频信号,其波形为低频信号调制中心载频信号后产生的低端载频(下边频)和高端载频(上边频)两个交替变化的正弦交流信号。
Linear frequency modulated ( lfm ) signals as the most popular pulse compression signal are a typical kind of time - varying , nonstationary signals , so applying the wigner - ville distribution into lfm signals has more advantages than conventional methods 雷达脉冲压缩技术中所使用的线性调频信号是一类典型的时变非平稳信号,采用时频分析的研究方法处理线性调频信号有着传统方法无法比拟的优点。