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In this paper, a new approach developed to retrieve temporally-differenced maps of the spatial distribution of water vapor from interferometric synthetic aperture radar (InSAR) data with a horizontal resolution as fine as 20 m is described. To get a more accurate map of wet delay, we used the ERA-Interim to predict the dry delay component in the total atmospheric delay from InSAR. In addition, the...
The measurement accuracy of the estimation of the Doppler frequency and the signal phase difference in Phase Doppler Anemometry (PDA) systems is investigated in this paper by taking into account the effect of the particle trajectory via the measurement volume and the different noise sources. Both the signal dependent (quantum shot) noise and the signal independent (thermal and dark current) noise...
Software testing plays an important role in ensuring software quality by running a program with test suites. Mutation testing is designed to evaluate whether a test suite is adequate in detecting faults. Due to the expensive cost of mutation testing, selective mutation testing was proposed to select a subset of mutants whose effectiveness is similar to the whole set of generated mutants. Although...
On-line continuous particle sizing plays a vital role in many industrial applications in various fields, for instance, particulate emission monitoring, drug delivery, atmosphere monitoring and painting [1]. The size, velocity and concentration of pulverized fuel used in an electric power plant are important parameters that affect both combustion efficiency, potentially increased safety risks and atmospheric...
This paper made an investigation to knowledge-type employees in Nanjing, who studied on HRM graduated from Nanjing's “211” colleges on 2010. In the base of organizational fairness investigation, calculated the percentage of every dimensionality by the way of AHP. The results showed that the percentage of distribution fairness and the longitudinal procedures fairness were the largest. Lastly, the results...
This paper derives the Cramér-Rao Bound for the frequency estimation of the noisy Doppler Burst Signal from the Laser Doppler Anemometry. The problem is solved by considering the effect of the particle trajectory via the measurement volume together with the dependency of the burst length on the Doppler frequency. The results provide an analytical expression for the lowest variance of the estimation...
This paper describes and compares two particle excitation methods, square and sine wave, used in conjunction with novel application of Phase Doppler Anemometry (PDA) to obtain particle size and charge simultaneously in real time. Different signal processing strategies for particle velocity and size estimation are investigated, including Quadrature Demodulation (QD), spectral analysis and correlation...
This paper describes an integrated signal processing system based on Quadrature Demodulation (QD) and correlation techniques to obtain particle size and charge simultaneously using phase Doppler anemometry (PDA). By solving the equation of particle motion in an AC electric field combined with the measurement of its size and velocity, the magnitude as well as the polarity of the particle charge can...
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