Czasopismo | ELEKTRONIKA - KONSTRUKCJE, TECHNOLOGIE, ZASTOSOWANIA | Rocznik 2012 - zeszyt 7

Experimental results obtained with FM-based passive radar demonstrator developed at Warsaw University of Technology

nr katalogowy: 69631

Passive bistatic radar (PBR) technology is becoming more mature, as experimental systems evolve into commercially available products [1], [2]. A natural tendency is to compare the results of a PBR, which is relatively new product on the market, with existing sensors, such as primary surveillance radar (PSR) or secondary surveillance radar (SSR). In the paper the results obtained with the PaRaDe (Passive Radar Demonstrator) demonstrator, developed at Warsaw University of Technology, are presented. The results were obtained during military exercise carried out in Poland, in September 2011. During the trials, military targets taking part in the exercise, as well as ordinary civilian traffic have been observed. The results obtained with the PaRaDe are compared with data provided by a Mode-S receiver (SSR) and a military active radar (PSR) [3]. In the paper the hardware and software parts of the PaRaDe system are presented, followed by the description of the results obtained during the trials. System Description Hardware The PaRaDe demonstrator is a passive radar using FM radio transmitters, operating in 88…108 MHz frequency band, as illuminators of opportunity [7], [8], [15], [16]. The antenna system of the radar is an 8-element antenna array arranged in a Uniform Circular Array. The array is mounted on a 12 m-high deployable mast. The signals from the individual array elements are amplified by low noise amplifiers (LNA) and filtered by band-pass filters (BPF) mounted on the top of the mast. After the filtering, the signals from all 8 channels are sampled coherently. The sampling is performed directly at radio frequency, i.e. no analog down-conversion is used. For the sampling, 4 versatile digitizers, with 2 inputs each, are used [9]. After sampling, the signals a[...]

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2012-7

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