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- When the sampling rate increases, the correlation increases quickly and the peak-to-average power ratio of oversampling OFDM signal changes neglectably. 随着过采样率增加,采样点之间相关性迅速上升,新增加采样点对信号峰值平均功率比的影响下降。
- In the domain of ECM, the frequency information of radar signal is important parameter for signal choosing, menace recognizing and guidance ECM. 在电子对抗领域中，雷达信号的频率信息是信号分选、威胁识别、引导干扰的重要参数。
- The constant false alarm rate (CFAR) processing of radar signal is an important item of modern radar signal processing. 摘要雷达信号的恒虚警率(CFAR)处理是现代雷达信号处理的重要内容。
- To improve the reusage of radar signal processing program code, an object oriented universal radar signal processing framework is proposed. 摘要为提高雷达信号处理程序代码的可重用性，设计了一种基于面向对象的雷达信号处理通用流程框架。
- The peak-to-average power ratio of orthogonal frequency division multiplexing(OFDM systems is reduced with an improved constellation extension scheme. 为降低正交频分复用(OFDM)信号的峰均功率比,提出了改进的星座图扩展方法。
- A high-speed system of radar signal collection and process which can analysis and process the real-time data and provide a soft flow of data process. 基于二者构建了高速的雷达信号采集处理系统，能够对数据进行实时处理和分析，并给出了数据处理流程图。
- The value of PRI can be educed by TOA of radar signal, so the feature of PRI can be gained from the frequency field analysis results of TOA. 摘要由于雷达信号PRI参数是由其脉冲到达时间TOA导出的，所以分析PRI特性可以转化到对TOA的频域特性分析上去；
- The superiority of the method is the pectinate filter characteristic, that is, the power ratio of the two output arms changes fast with the Bragg wavelength while in the rising or falling edge of the output spectrum. 该方法主要是基于 MZ 干涉仪的梳状滤波特性,即在输出光谱的上升或下降沿两输出臂的功率比值随波长变化很快,通过调整干涉仪臂长差,得到具有陡峭边沿的滤波器。
- Based on them,a high-speed system of radar signal acquisition and process which can analyze and deal with the real-time data is built,and a flowchart of data process is provided. 基于二者构建了高速的雷达信号采集处理系统,能够对数据进行实时处理和分析,并给出了数据处理流程图。
- The analysis and simulation for Linear Frequency Modulated (LFM) pulse compression signal of radar, it is very significant in the field of radar signal simulation. 摘要对雷达线性调频脉冲压缩信号进行分析以及仿真，在雷达信号模拟领域中是非常重要的。
- The technology of parameter measurement and in-pulse characteristic extracting of radar signal are studied,and high-speed processing is realized on DSP. 研究了基于瞬时自相关法的脉冲参数测量和脉内特征参数提取技术,并用DSP实现了高速处理。
- The ratio of students to teachers is 35:1. 学生和老师的比率是三十五比一。
- The ratio of schoolboys to schoolgirls is 2 to 1. 男学生和女学生的比例是2比1。
- consumable purchasing power ratio of currency 消费品购买力货币比价
- The PRI transfer algorithm and wavelet transfer algorithm is analysed firstly,then a method of radar signal sorting is proposed in this paper based on the advantages of the two algorithms. 分析了脉冲重复间隔(PRI)变换算法和小波变换算法的基本原理,针对两种算法在雷达信号分选中的优缺点,提出了一种基于PRI变换和小波变换相结合的雷达信号综合分选方法。
- Men outnumber women here in the ratio of three to one. 此地男子数量以三比一超过女子。
- Aiming at the problem of poor performance of radar High Resolution Range Profile (HRRP) under low SNR, a method is proposed which uses wavelet to denoise the radar signal for enhancing FIRRP. 摘要针对低信噪比情况下目标的雷达一维距离像性能较差的问题，提出利用小波去噪以增强目标一维距离像的方法。
- domestic purchasing power ratio of currency 国内购买力货币比价
- In this paper, after analyzing the procedure of radar signal processing and the methods of blind source separation (BSS), a multi-step processing method based on BSS to radar anti-jamming is proposed. 本文通过对雷达信号处理过程和盲源分离技术的分析研究，提出采用基于盲源分离的多步处理抗干扰方法进行雷达抗干扰信号处理，可使雷达在复杂背景下具有更强的抗干扰能力。
