(2) represents a portion of Nb bits of the data stream, each of the symbols (2) being defined by the combination of an up-chirp signal (3) of duration t1 followed by a down-chirp signal (4) of duration t2 or vice versa, and wherein, for each symbol (2), the sum of the ...
In order to test the frequency response of missile actuator with high efficiency and precision,a new testing method for frequency response based on frequency modulated pulse sweep(chirp signal) is advanced. 分析了调频脉冲扫频信号的特点,设计了以该信号为激励信号的频率特性测试过程,解决了激励信号产生和...
signal processing, pointes out the indispensability of correction of azimuth positions.Because of the overlap between neighboring sub-band,unwanted virtual image is unavoidable.The mechanism of the virtual image is interpreted in detail,stepped frequency up-and-down chirp signal based approach is put ...
信号子空间维数e时,单次检测所能适应的最低信噪比SNRmin: May result in when according to (25) type to different false alarm probability a, signal length b, including chirp signal space dimension c and d signal subspace dimension e, the single examination can adapt lowest signal-to-noise ratio ...
3.To chirp or whistle, as a bird does. 4.NauticalTo signal the crew with a boatswain's pipe. 5.MetallurgyTo develop conical cavities during solidification. Phrasal Verbs: pipe downSlang To stop talking; be quiet. pipe up To speak up. ...
or both. The resulting signal does not resemble a radar signal, and so may be used to implement the WURS in DFS channels. Other implementations may employ other chirp signals and other time-continuous signals in other wireless communications technologies, for example in cellular, LTE, and the ...
A neat trick to avoid 1/f noise is to modulate the signal to a region where there is no 1/f noise and then demodulate it. This trick, known as chopper stabilization, has been used for decades to shift the 1/f noise to a different frequency band, where it can be easily filtered out...
Back-up aid indicator using FMCW chirp signal or a time domain pulse signal A back-up aid indication system includes a sensor for providing detection coverage in a predetermined coverage zone behind a vehicle. The sensor includes a transmit antenna adapted for transmitting an RF signal having a ...
Similarly, a signal photon correctly passing due to dispersion with probability (1−QBERdisp) has a probability QBERMZI of flipping to the wrong port. The net QBER, in this case becomes (1−QBERdisp)QBERMZI. Adding up all the contributions, collectively total QBER of the system can be ...
The more the person you suspect of misleading or betraying you protests she or he isnotacting deceptively - and the more s/he refuses to communicate about the issue, chances are there's fire where that smoke is puffing up a signal. ...