James E. Palmer

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This paper provides a detailed overview of the Digital Video Broadcasting Terrestrial (DVB-T) signal structure and the implications for passive radar systems that use these signals as illuminators of opportunity. In particular, we analyze the ambiguity function and explain its delay and Doppler properties in terms of the underlying structure of the DVB-T(More)
This paper provides a detailed overview of Digital Video Broadcasting Terrestrial (DVB-T) signal structure and the implications for passive radar systems that use these as illuminators of opportunity. In particular, we analyze the ambiguity function and make explicit its features in delay and Doppler in terms of the underlying structure of the DVB-T signal.(More)
In this paper we investigate the dynamic range requirements of a passive radar system and show the impact of analogto-digital converter (ADC) quantization on system performance. This analysis is carried out with a view towards understanding how many ADC bits are required in each channel of the passive radar system. To give practical insight, we consider the(More)
Processing of passive radar signals is hindered by the presence of clutter and sensor noise in the reference signal, and by strong direct and zero-Doppler clutter returns in the surveillance signal. Previous research has addressed methods of removing or mitigating unwanted components in either signal. However what is considered as interference in one signal(More)
Preemployment screening tests have been analyzed in the past for their validity and predictability. This study (for a specific work population) demonstrates correlation between a control group and the tested group of workers which effectively assesses the probability of injury. In the study, 17 variables were utilized to determine the classification of a(More)
In Passive Bistatic Radar (PBR) a local communications transmitter is used as an illuminator. A Line Of Sight (LOS) signal is captured to use as a template for radar processing. This may be cleaned via demodulation and remodulation, removing short-delay copies and sensor noise. However differences between the transmitter clock and local clock cause the(More)
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