Traditional filtered backprojection(FBP) method required complete projection data,which were often difficult or even impossible to acquire for objective reasons.
They are used in TV, telecamera,audio andvisual recorder,microprocessor and other electronic equipment for resonance ,osilating coupling, delay, filter, trap, choke and etc.
Contains symbols for VHF, UHF, and SHF circuit design, including capacitance measurers, nonreciprocal devices, modulators, phase shifters, field polarization devices, and filters.
Aiming at the characteristics of RLG strapdown inertial navigation system,the performances of Kalman filter,analytic gyrocompassing and indirect estimation are analyzed in theory.
After analysis and determination on harmonic wave from rectification units operation, and understood hazardness of harmonic wave, the design project of harness was put forward.
This paper presents a new frequency domain deghosting method on the basis of analyzing both the ghost formation mechanism and its filter spectrum characteristics.
The result of experiment show that this algorithm has good robust against JPEG，and frangibility against the familiar attacks，and beseem to selective authentication for image.
Numerical simulation studies indicate that the adaptive filter is a powerful noise suppresser for correlated interferences, especially for those with amplitude changing and time delay.
Finally, in the micropolis corners you can see ring resonators, which are a conventional (non photonic-crystal) way to achieve a resonant cavity for use in channel-drop filters, etcetera.
A new variable step-size LMS adaptive filtering algorithm is presented, which makes use of the intercorrelation function of the relative output error signal to control the new variable step-size.
Scheme is proposed of using a computer on sline and digital fil-tering technique to perform digital filtering and lane identification of the phase signals of a port radio navigation system .
Ends of the tegular filters (10) are cut off crosswise to make the end surfaces respectively form inclined surfaces such that vertical sections of the tegular filters (10) are in a rough trapezoid.
Bose, for instance, does this by playing a welcome chime, and monitoring feedback from the internal microphone to customize noise-canceling filters, accordingly.
What we're hearing is called a comb filtering effect, when interference causes the same sound to be heard with a very small time delay between signals.
And finally, four: Be aware of your personal perceptual filters. Elements of your experience, including your culture, community, and family, influence how you see the world.
But if you had a filter oriented, say diagonally, well, then it would be convenient to describe things as a superposition of that diagonal direction and it's perpendicular anti-diagonal direction.
So even though 0% of the photons passing through the first would pass through that last if nothing was in between, by introducing another filter, 25% of them now passed through all three.
When this impulse reaches the fault, it causes an electrical arc which can be heard as a thump above the ground, usually aided by a handheld detector with a microphone and digital filters.
(or at least with perfect filters it would be) Because all of the photons passing through that first one are polarized vertically, so they actually have a 0% chance of passing a filter oriented horizontally.
供一个115赫兹时每八度6分贝的低频上移滤波器。
进行处理。
，
理声学模型、动态噪声分配等作出简明介绍。
算法(FBP)要求完备的投
有高频，用的是所谓的高通
听到高端，一个所谓的高通
改变它们的状态，否则你无法解释这一点。
导致听到相同的声音时，信号之间的时间延迟很小。
这种脉冲到达故障时，会产生电弧， 可以听到地面上的重击声，通常由带有麦克风和数字
