Results 21 to 30 of about 1,722,338 (297)
Dual-Frequency Signal Enhancement Method of Moving Target Echoes for GNSS-S Radar
Remote Sensing, 2023 The GNSS-S radar utilizes the signals of a global navigation satellite system (GNSS) to carry out target detection. Due to the very low power of GNSS signals, long-term accumulation is needed to improve the gain of the echo signals.
Wenning Gao +6 more
doaj +1 more source
IEEE Access, 2019 The vibration feature of weak gear fault is often covered in strong background noise, which makes it necessary to establish weak feature enhancement methods.
Zhixing Li +3 more
doaj +1 more source
Optimizing the Signal to Noise Ratio of a Beam Deflection Measurement with Interferometric Weak Values [PDF]
, 2009 The amplification obtained using weak values is quantified through a detailed investigation of the signal to noise ratio for an optical beam deflection measurement.
Dixon, P. Ben +3 more
core +3 more sources
Observation of the quantum paradox of separation of a single photon from one of its properties [PDF]
, 2016 We report an experimental realization of the quantum paradox of the separation of a single photon from one of its properties (the so-called "quantum Cheshire cat"). We use a modified Sagnac interferometer with displaced paths to produce appropriately pre-
Ashby, James M. +2 more
core +3 more sources
IEEE Access, 2021 For weak signal detection with known frequency, based on the double coupling Duffing oscillator method, a differential double coupling Duffing oscillator and Van der Pol-Duffing oscillator detection method is proposed.
Guohui Li, Jiuyang Cui, Hong Yang
doaj +1 more source
Grouping FFT Based Two-Stage High Sensitivity Signal Acquisition With Sign Transitions
IEEE Access, 2018 The acquisition performance of weak global navigation satellite system signals, especially those with secondary codes, is susceptible to sign transitions. To better understand and overcome the negative impact of sign transitions, this paper derived a new
Aimeng Liu +3 more
doaj +1 more source
Cosmogenic neutrinos and quasi-stable supersymmetric particle production [PDF]
, 2007 We study the signal for the detection of quasi-stable supersymmetric particles produced in interactions of cosmogenic neutrinos. We consider energy loss of high energy staus due to photonuclear and weak interactions.
I. Sarcevic +5 more
core +1 more source
Design and Performance Evaluation of a Dual Antenna Joint Carrier Tracking Loop
Sensors, 2015 In order to track the carrier phases of Global Navigation Satellite Systems (GNSS) signals in signal degraded environments, a dual antenna joint carrier tracking loop is proposed and evaluated.
Wenfei Guo +4 more
doaj +1 more source
Two-qubit parametric amplifier: large amplification of weak signals
, 2012 Using numerical simulations, we show that two coupled qubits can amplify a weak signal about hundredfold. This can be achieved if the two qubits are biased simultaneously by this weak signal and a strong pump signal, both of which having frequencies ...
A. L. Rakhmanov +11 more
core +1 more source
Cosmological constraints from Subaru weak lensing cluster counts [PDF]
, 2015 We present results of weak lensing cluster counts obtained from 11 sq.deg SuprimeCam data. Although the area is much smaller than previous work dealing with weak lensing peak statistics, the number density of galaxies usable for weak lensing analysis is ...
Hamana, Takashi +3 more
core +1 more source