1) multi-frequencies mechanism
多频率检测机制
2) Frequency Modulation Detection
频率调制检测
3) spectrum sensing mechanism
频谱检测机制
1.
CR(Cognitive Radio) spectrum sensing mechanisms are studied to improve the performance of spectrum sensing and the efficiency of spectrum utilization.
为了提高认知用户检测效率、改善认知用户检测性能以及提高频谱资源利用率,从检测模式、检测周期、检测时长和检测信道等多个角度,对认知无线电频谱检测机制中检测参数和检测策略的选取及优化方法进行了理论推导和定量分析。
4) multi-parameter test with multi-frequency
多频率多参数检测
5) frequency detection
频率检测
1.
This interface circuit consists of A/D converter, frequency divider and 'AND' gate circuit,counter,computerfrequency detection and software,ete.
该接口电路包括Ａ／Ｄ转换、分频及＂与＂门电路、计数器电路、计算机频率检测和软件等部分，其特点是测量精度高，速度快，电路简单、可靠，适用于ＴＩＧ焊接馆深振荡频率的检测。
2.
FPGA utilized to design the frequency detection module, this instrument can be used to measure 8-channel frequency at the same time.
该系统利用FPGA设计频率检测系统,可同时检测8个通道的频率,通过对频率的测量可实时连续地监测反应的进行,达到定性定量检测的目的。
3.
To acquire the information of railway binary frequency-shift keying(2FSK)signal s upper and down side frequencies and base low-frequency with high accuracy in real time,a novel frequency detection algorithm compatible with China-made system and France UM71 system was proposed.
为实时高精度获取铁道二进制频移键控信号的上、下边频和基带低频信息,提出一种可兼容国产制式和法国UM71制式的频率检测新方法。
6) testing frequency
检测频率
1.
In a certain medium structure,the echo energy transmission coefficient changing with the ultrasonic testing frequency is studied and the maximum magnitude is obtained.
得出了在被检测结构一定的条件下,大的回波能量透射系数对应有一最佳检测频率。
补充资料：频率计量(见时间频率计量)
频率计量(见时间频率计量)
frequency metrology: see time and frequency metrology
口n IQ liliang顷率频率计皿(f比quency metrolo盯) 计t。见时闰
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条