Weak signal
The Fractional Order Duffing Oscillator Detection Method for Nanovolt Level Weak Signal
... level weak signal detection, the system is set to the critical chaotic state as shown in Figure 3 (a) and (b) and Fd is ...measured signal is incorporated into the detection system, the Duffing ...
5
Research on Weak Signal Detection with Duffing Oscillator Based on Virtual Instrument Technology
... wave signal transmitters, transmission medium and ground weak acoustic ...ground weak signal detection is very important part of ...the signal intensity of downhole acoustic generator ...
5
An Improved Immune Genetic Algorithm for Weak Signal Motif Detecting Problems
... In this work, we propose an improved immune genetic algorithm, called MRPIGA, to solve a class of specific planted motif problems, weak signal motif problems, in which a modified random [r] ...
5
Weak Signal Detection Research Based on Duffing Oscillator Used for Downhole Communication
... input signal in the case of input signal frequency for 600Hz and the amplitude for ...reference signal with the amplitude for 0.8670V or a little small, when the weak signal with the ...
9
Weak Signal Detection Research by Fractional Order Chaotic System And Non-Detection Area Removed Algorithm
... the weak signal located in the Non detection zone is ...the signal located in the Non detection zone, and achieved good signal-to-noise ratio and detection anti noise ...
9
A Study on the Method of Multi Modem Concurrent Video Transmission in Weak Signal and Partially No Signal Areas
... in weak or no signal areas; 2) sometimes, although the signal strength of some base station is good enough, the actual bandwidth for each subscriber could drop dramatically with the increase of the ...
11
Automatic Weak Signal Detection and Forecasting
... of weak signals is a means of conducting foresight (Holopainen & Toivonen, ...2012). Weak signals are “warnings ...though weak signals can become strong signals, which permit an accurate ...
40
An Adaptive Technique for the Mitigation of GPS Cross Correlation
... strong signal and subtracting it from the input signal data-stream before baseband down-conversion and ...the weak signal, a different code that rejects the strong signal cross ...
8
High frequency stochastic resonance in SQUIDs
... relatively weak: signal amplification was demon- strated but, because the SNR did not increase, many scientists did not regard the effect as being properly describable as ...
11
Weak GPS Signal Acquisition Algorithm Based on Chaotic Oscillator
... detect weak Global Position System (GPS) signal indoors, various high-sensitivity detection algorithms have been ...periodic signal and inert to noise, possesses huge advantage in weak ...
6
Adaptive parameter tuning stochastic resonance based on SVD and its application in weak IF digital signal enhancement
... enhance signal energy, whereas its system parameters are hard to select, and how to combine it with more practical signals needs to be ...digital signal with low SNR (signal-noise ratio) is selected ...
12
Infection of the Ovine herpesvirus 2 in the reservoir host, sheep, and the susceptible host, cattle
... HE: NHAIR; OV2.5, ORF65: Negative OvHV-2 IH: Weak reaction in stromal fibroblasts HE: NHAIR OV2.5: Strong signal in epithelial cells in taste buds ORF65: Similar to Ov2.5 OvHV-2 IH: Weak[r] ...
203
A direction finding technique for the ULF electromagnetic source
... In spite of this fact Kopytenko et al. (2000, 2002) and Ismaguilov et al. (2003) have proposed a special technique for searching of the underground ULF source. A network of the ground-recording stations equipped with ...
5
Oscillator Subject to Periodic and Random Forces
... An external force in Equation (14) can be cho- sen as a periodic force acting on the left well or as a ran- dom force acting on the barrier. It turns out that for both cases, an external force tends to equalize the ...
5
Vibrational resonance
... Numerical simulation of equation (5) confirms these ideas. Some typical results are presented in figure 2 for different values of A and ω. The variations of the response amplitude Q(C) and phase ψ(C) with the amplitude C ...
6
On a weak form of weak quasi continuity
... Recently, weak quasi-continuity has been developed further by Noiri [5, 6] and Park and Ha ...[5], weak quasi-continuity is equiva- lent to the weak semicontinuity developed by Arya and Bhamini ...
6
Electromagnetic Response Studies of the Antenna for Deep Water Deep Target CSEM Environments
... proposed model. The antenna length of 250 m is excited with a 200 ampere current with a sinusoidal waveform at different frequencies. An HED Antenna is placed in x- direction at 50 m above the sea floor. The current used ...
10
Study of 5 and 10 mm thick CZT strip detectors
... 2318.. longer duration peak. Using integrator only shaping and converting the positive peak results in a better signal-to-noise ratio for these weak signals. The amp[r] ...
7
Hypothalamic sonic hedgehog is required for cell specification and proliferation of LHX3/LHX4 pituitary embryonic precursors
... control embryos (arrows in A,C), but are remarkably anteriorised in the mutants (arrows in B,D). Note the ectopic expression of Bmp4 in the anterior region of the mutant Rathke ’ s pouch (RP) (arrowhead in D). Asterisk ...
14
Dreher, Matthias (2005): Experimental Demonstration of Superradiant Amplification of Ultra-Short Laser Pulses in a Plasma. Dissertation, LMU München: Fakultät für Physik
... pump, signal and plasma wave to short dis- tances: (a) by using a plasma with a density gradient [67] or (b) by using pump pulses with a large chirp [68, ...
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