Frequency Correction Channel FCCH

The traditional FCCH capture algorithm in GSM system is introduced in this paper.

在介绍传统GSM系统频率校正信道(FCCH)侦察捕获算法的基础上,针对在受到强噪声干扰时传统算法的不适用性,提出了基于最大似然匹配的FCCH捕获算法,并进行了计算机仿真验证。

This article is proposed for the capture of FCCH under strong cochannel interfence after the scout’s working.

针对GSM侦察设备升空后,截获和分析GSM信号时存在的严重的同频干扰问题,首先分析了GSM系统公共信道中频率校正信道(FCCH)的结构,然后根据其特点,提出了几种捕获和克服同频FCCH的方法,并进行了仿真验证。

The real-time frequency calibration method in frequency agility radar target simulator;

频率捷变雷达目标模拟器实时动态频率校准方法

This paper analyzes the defect of the frequency calibration in the traditional signal source of the frequency agility radar,improves the frequency calibration,designs a new frequency calibration circuit.

指出了原有频率捷变雷达信号源中频率校准方法存在的缺陷;改进了原有频率校准电路,经过对实际数据的分析,新的校准电路频率漂移速度达到105Hz/μs,有效地解决了原有信号源的频率跟踪精度低和稳定性差的问题。

This paper analyzes the defect of the frequency calibration in the traditional signal source of the frequency agility radar, designs a new work-while-calibrate circuit for frequency calibration, improving the frequency track precision and the stable work duration.

分析了原有频率捷变雷达信号源中频率校准方法存在的缺陷,在此基础上设计了边工作边校准的频率校准电路,提高了信号源的频率跟踪精度和稳定工作时间。

quartz crystal calibration equipment

石英晶体频率校准仪

A STUDY ON METHODS AND INSTRUMENTS OF CALIBRATING FINE FREQUENCY OF EDM

光电测距仪精测尺频率校准方法与仪器的研究

Analysis of the Caliberation Formula and Measurment Uncertainty of Frequency of the Digital Signal Generator;

数字信号源频率校准及测量不确定度评定研究

Design of a Frequency Calibration System for Wireless Simultaneous Net Based on FPGA

基于FPGA的无线同播频率校准装置的设计

A Research and Design of Crystal Resonator Resonant Frequency Regulation System Based on Laser Marking

基于激光打标技术的晶振频率校准系统的研究与设计

A RF Power Auto-Calibration System Based on LH79520

基于LH79520的射频功率自动校准系统设计

The performance of frequency cali- brator is directly related to precision transfering frequen- cy standard.

校频仪的性能,直接关系到传递频率标准的精度。

Development of Frequency Multi-Parameter Characteristics Field Calibration Equipment Based on CPCI Bus

基于CPCI总线的频率多参量现场校准装置的研制

Frequency Measurement Method of Synchronization Clock Calibration in Distributed Testing System

分布式测试系统同步时钟校准的频率测量方法

Frequency Characteristics Calibration of Optical Electric Integrated Sensor for Intensive Electric Field

光电集成强电场传感器的频率特性校准研究

Wave equation datum correction in frequency-wavenumber (f-k) domain.

在频率—波数域实现波动方程基准面校正

Power Frequency Table Uncertainty Measurement Analysis and Calibration Measurement Capability Evaluation

工频频率表测量不确定度分析与校准测量能力评定

chrominance subcarrier reference

色度副载波基准频率

SFTS (Standard Frequency and Time Signals)

标准频率和时间信号

hydrogen maser frequency standard

氢激射型原子频率标准

standard tuning frequency

GB/T3451-1982标准调音频率

cesium atomic beam frequency standard

铯原子射束的频率标准

calibration marker

校准指示器, 校准标记(频标, 时标)