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A novel pair of mutually-orthogonal radar waveforms is proposed for simultaneous polarimetric measurements (SPM). The proposed waveform pair exploits the orthogonality features between different subcarriers within a single orthogonal frequency division multiplexing (OFDM) chip, and is called interleaved OFDM (I-OFDM). With I-OFDM signals the isolation limitation defined by the bandwidth time (BT)...
A system-level simulation model has been developed to conduct the simulation of a whole full-polarimetric radar system, all parameters both in analogue part and digital part can then be optimally selected, thus the most optimal radar performance can be achieved.
Combination of two existing S-band radars TARA and PARSAX into a multi-static system for weather and targets observation is discussed. The proposed combination of radars will provide unique back- and bistatic-scattered radar data simultaneously. The feasibility of the proposed combination has been verified experimentally. Analysis of the operational modes is performed and waveforms for MIMO operation...
A novel pair of interleaved OFDM (I-OFDM) signals is proposed to overcome the limitations of existing signals for simultaneous polarimetric measurement. The proposed I-OFDM signal pair exploits the orthogonality features between different sub-carriers within a single OFDM chip, and can then yield the theoretical orthogonality. The isolation limitation defined by the BT product for linear frequency...
This paper outlines the work on the design of a reconfigurable receiver for the PARSAX radar. The FPGA based digital receiver samples incoming signals at intermediate frequency (IF) and processes signals digitally instead of using more conventional analog approaches. In this way it offers more robust system stability and avoids unnecessary multi-channel calibrations of analog circuits. The processing...
The article describes the IRCTR PARSAX radar system. It is an S-band high-resolution Doppler polarimetric FMCW radar utilizing dual-orthogonal sounding signals. The signals allow for measuring in one sweep all elements of the radar targets polarization scattering matrix simultaneously. PARSAX characteristics are: modular system set-up, highly-optimised linearity and sensitivity of the RF front-end...
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