The digital receiver is state-of-the-art of modern oppler weather radars. A digital receiver samp... more The digital receiver is state-of-the-art of modern oppler weather radars. A digital receiver samples the ntermediate frequency (IF) signal of a radar receiver. atched filtering, baseband conversion and phase refrencing for coherent-on-receive operation are realized y digital signal processing hardware and software. ogarithmic amplifiers, analog I/Q demodulators and hase-locked coherent oscillators (COHO) are obsolete. or the first time it is possible to realize dynamic range igures with linear signal reception which were reserved o logarithmic receivers until then. A key advantage of a inear receiver is its capability to be calibrated with a table power reference at any point of its dynamic range ithout the necessity to cover the complete dynamic ange by calibrating more points (single-point calibraion). This paper presents some considerations in regard o the specification and performance testing of digital eceivers. The key parameters of a linear receiver are its inearity and its d...
Back-scattering and forward-scattering of weathers radar signals from Wind park establishments ar... more Back-scattering and forward-scattering of weathers radar signals from Wind park establishments are well known sources of distortions and interference in weather radar echoes. In this contribution, we shall consider the polarimetric and temporal behavior of weather radar signals. The aim is to identify key polarimetric and temporal-dependence features of radar signals in order to develop theoretical framework for developing algorithms for detecting and possibly mitigating scattering from wind-parks. In doing so, we shall consider the reflectivity, differential reflectivity (ZDR), and linear depolarisation ratio (LDR) signatures of rain and wind parks. The analysis will be based on both quantitative and heuristic modelling of the two competing radar signal sources.
The digital receiver is state-of-the-art of modern oppler weather radars. A digital receiver samp... more The digital receiver is state-of-the-art of modern oppler weather radars. A digital receiver samples the ntermediate frequency (IF) signal of a radar receiver. atched filtering, baseband conversion and phase refrencing for coherent-on-receive operation are realized y digital signal processing hardware and software. ogarithmic amplifiers, analog I/Q demodulators and hase-locked coherent oscillators (COHO) are obsolete. or the first time it is possible to realize dynamic range igures with linear signal reception which were reserved o logarithmic receivers until then. A key advantage of a inear receiver is its capability to be calibrated with a table power reference at any point of its dynamic range ithout the necessity to cover the complete dynamic ange by calibrating more points (single-point calibraion). This paper presents some considerations in regard o the specification and performance testing of digital eceivers. The key parameters of a linear receiver are its inearity and its d...
Back-scattering and forward-scattering of weathers radar signals from Wind park establishments ar... more Back-scattering and forward-scattering of weathers radar signals from Wind park establishments are well known sources of distortions and interference in weather radar echoes. In this contribution, we shall consider the polarimetric and temporal behavior of weather radar signals. The aim is to identify key polarimetric and temporal-dependence features of radar signals in order to develop theoretical framework for developing algorithms for detecting and possibly mitigating scattering from wind-parks. In doing so, we shall consider the reflectivity, differential reflectivity (ZDR), and linear depolarisation ratio (LDR) signatures of rain and wind parks. The analysis will be based on both quantitative and heuristic modelling of the two competing radar signal sources.
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