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This paper presents measurement results on wave polarization for multi source scenarios. It focuses on the RF hardware requirements at the receiver to achieve low-cost and high-resolution estimation. The proposed system has duplicated RF receiver chains in order to simultaneously sample the double polarized antennas outputs. Low-cost and high accuracy within a large bandwidth are achieved by using...
This paper describes an active electronically scanned array (AESA) FMCW radar with eight transceivers. Each transceiver has its own direct digital synthesizer (DDS) for signal generation which enables digital beam forming on transmit as well as on receive. The coherent operation of the eight transceivers and the capability to perform digital beam forming on transmit and receive is demonstrated. Also...
This paper presents an experience gathered on near field and far field measurements in SITU, for the failure detection and troubleshooting of phased array antennas implemented in in-service air surveillance radars (the issue being to ensure the stability of the antenna performances of the associated radars elected for a longer and longer life). Although far field and near field measurements techniques...
In this paper the design of sparse antenna arrays and signal processing algorithms for non-parametric high resolution range and angle estimation algorithms for FMCW radar sensor arrays are presented. Since the performance of such systems strongly depends both on the antenna placement as well as the adequate algorithms, the close relation between antenna hardware and signal processing is exploited...
The paper presents digital beamforming for Passive Coherent Location (PCL) radar. The considered circular antenna array is a part of a passive system developed at Warsaw University of Technology. The system is based on FM radio transmitters. The array consists of eight half-wave dipoles arranged in a circular array covering 360deg with multiple beams. The digital beamforming procedure is presented,...
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