Optimal Passive Detection Using Digital Television Terrestrial Broadcasting Single Frequency Network
Over recent years, there has been increasing attention focused on passive coherent detection using orthogonal frequency division multiplexing (OFDM) based signal of opportunity. This paper investigates passive coherent detection using Chinese digital television terrestrial broadcasting
single frequency network (DTTB SFN), which adopts the time domain synchronous-OFDM (TDS-OFDM) modulation. First, we derive theoretical models of passive coherent detection where no reference antenna is needed to obtain the direct signal. Then a direct signal reconstruction is put forward by
the use of pseudo noise (PN) sequence in TDS-OFDM. The possible carrier frequency offset (CFO) problem in OFDM is also taken into account. Subsequently, the optimal direct position determination (DPD) approach for the multiple illuminators in SFN is presented to improve the location accuracy.
Finally, simulation results verify that our proposal can achieve excellent location performance without too much computation.
Keywords: Clutter Cancellation; Cross Ambiguity Function; Direct Position Determination; Direct Signal Reconstruction; Passive Bistatic Radar; Single Frequency Network
Document Type: Research Article
Affiliations: National Lab of Radar Signal Processing, Xidian University, Xi’an 710071, P. R. China
Publication date: 01 January 2016
- Journal of Computational and Theoretical Nanoscience is an international peer-reviewed journal with a wide-ranging coverage, consolidates research activities in all aspects of computational and theoretical nanoscience into a single reference source. This journal offers scientists and engineers peer-reviewed research papers in all aspects of computational and theoretical nanoscience and nanotechnology in chemistry, physics, materials science, engineering and biology to publish original full papers and timely state-of-the-art reviews and short communications encompassing the fundamental and applied research.
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