- 扫频
- frequency: n. 1.屡次，频仍，频繁。 2.(脉搏等的)次数，出现 ...
- sweep: vt. (swept ) 1.扫(房间等)，扫除，打扫； ...
- frequency-sweep: 扫频,频率扫描
- sweep frequency: 扫描频率
- continuous sweep frequency audiometer: 连续扫频式听力计,连频听力计
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frequency sweep中文什么意思
- 扫频
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例句与用法
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- In addition , it also describes the method of designing microwave interferometer diagnosis systems . in chapter 4 , the frequency sweep microwave interferometer diagnosis system is designed in detail and it ' s issues and errors are described
第四章详细地设计了气动物理靶尾迹扫频式微波干涉仪诊断系统，提出了的设计思想，并说明了这类干涉仪要注意的问题。 - The system configuration of the fmcw level radar system based on the integrated microwave front unit ( with central frequency of loghz and frequency sweeping bandwidth of 1 . 5 ghz ) and the design of the real time signal processing unit based on the 32 - bit dsp - tms320c31 are introduced
然后介绍基于集成微波前端(中心频率10ghz ，扫频带宽1 . 5ghz )的fmcw液位测量雷达以及基于dsp ( tms320c31 )的实时信号处理系统设计。 - It is necessary in digital communication system that carrier recovery can compensate frequency offset and phase jitter brought by transmission and modulation . this paper is mainly focused on carrier recovery technique . we introduce the channel model at cable headed and receiving site . firstly , we introduce the principle of carrier recovery and give some algorithms of them , which are directed - decision , reduced constellation and frequency sweeping
本论文紧紧围绕着数字通信系统中的载波恢复技术，在介绍了有线通信系统所用的调制解调信道模型后，首先阐述了载波恢复技术的思想和基本原理，在此基础上给出了三种载波恢复算法，即判决导向算法、简化星座判决算法和扫频算法，并且给出了其各自的仿真图：然后深入研究了一种适合高阶qam并且能纠正较大频偏的载波恢复技术：极性判决算法。 - Scalar network analyzer is a kind of intelligent instrument based on frequency sweep test technology that used to measure the amplitude - frequent cy characteristic of linear system . network analyzer adopt these new technology such as frequency synthesis , sampling technique , broad - band sweeping and computer - assisted testing
标量网络分析仪是一种基于扫频测量技术,用于测量线性系统幅频特性的智能化仪器。网络分析仪结合了频率合成技术、采样技术、宽带扫频技术、计算机辅助测量等新技术。 - In the design of hardware , frequency sweep signal is based on dds + pll . by the control the singlechip c8051f060 , ad9852 , the dds chip , can achieve stepped frequency signal . with amplifying and detector circuits , the instrument can achieve the measurement and receiving of amplitude frequency characteristic result . by means of pdiusbd12 finish the usb1 . 1 protocol conversion , communicate with usb interface of pc , the instrument give the measurement resul of amplitude - frequency characteristic in lcd of pc
硬件方面,扫频信号源基于dds + pll的技术,由c8051f060单片机控制dds芯片ad9852实现频率步进。再加上外围放大、检波等电路,测量和接收幅频特性。并借助于pdiusbd12完成测量数据usb1 . 1协议转换,实现与pc机的usb接口通信,将幅频特性测量结果在pc机的液晶显示屏上表达出来。