1) spectral decomposition detection
分频检测
2) harmonics detection with separate frequency
分频检测法
3) harmonic detection methods with separate frequency
谐波分频检测
4) frequency domain differential detection
频域差分检测
1.
Analysis of BER performance of frequency domain differential detection OFDM system in multipath fading channels;
多径衰落信道下频域差分检测OFDM系统的误码率分析
2.
In this paper,the closed form expressions of bit error rate (BER) performances of orthogonal frequency division multiplexing (OFDM) system using the frequency domain differential detection (FDDD) and time domain differential detection (TDDD) are obtained, the theoretical results are evaluated by simulation.
在多径衰落信道条件下,分析了正交频分复用系统的频域差分检测和时域 差分检测的误码率性能,得到了两种系统的误码率解析表达式,并进行了仿真验证。
6) video detection
视频检测
1.
Background initialization algorithm in traffic flow video detection;
交通流视频检测中背景初始化算法
2.
Background extraction model and shadow detection algorithm in traffic flow video detection;
交通流视频检测中背景模型与阴影检测算法
3.
Designning and realizing video detection and management system of traffic violations;
交通违章视频检测管理系统的设计与实现
补充资料：分频
将较高频率变为其整数分之一低频率的方法。早期采用混频法，后又采用张弛振荡与被分频率同步法，还可用锁相法。在高频技术中，可用隧道二极管分频。常用二进制触发器分频法，利用反馈可实现任意分数的分频。分频所得信号可保留原信号的稳定度。
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