Madhu Sachidananda

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In this paper, a new algorithm for the estimation of spectral parameters from the signal time series, collected using the staggered pulse repetition time (PRT) transmission in a Doppler weather radar, is presented. The algorithm uses the Fourier transform and a magnitude deconvolution procedure to reconstruct the signal spectrum, and then the spectral(More)
This paper presents a technique that enables the estimation of spectral moments of overlaid first and second trip weather echo signals in a pulsed Doppler radar. The transmitted pulses are phase coded with a sequence that allows manipulation of the signal spectrum in such a way that either the first or the second trip signal autocorrelation can be made(More)
This paper deals with the recovery of Doppler velocities in the presence of overlaid echoes in range. Transmitted pulses are phase shifted to tag the echoes from scatterers separated by the unambiguous range. A new systematic phase code and an algorithm for estimating the mean velocities of 1st and 2nd trip signals when they are overlaid are presented. The(More)
It has been demonstrated through simulations that the SZ phase code method of mitigating range ambiguities has a performance that exceeds any other known phase-coding scheme. This paper describes an implementation of this code on a weather radar and compares its performance with that derived from simulations. Spectral data obtained from NCAR’s S-Pol radar,(More)
Increasing pressures on freshwater supplies, continuity of supply uncertainties, and costs linked to legislative compliance, such as for wastewater treatment, are driving water use reduction up the agenda of manufacturing businesses. A survey is presented of current analysis methods and tools generally available to industry to analyze environmental impact(More)
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