Open AccessCramér–Rao lower bound for ATSC signal‐based passive radar systems
Author(s) -
Alslaimy M.,
Smith G.E.
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.0011
Subject(s) - cramér–rao bound , bistatic radar , multistatic radar , passive radar , upper and lower bounds , ambiguity function , computer science , signal (programming language) , radar , ambiguity , range (aeronautics) , algorithm , remote sensing , electronic engineering , telecommunications , estimation theory , mathematics , radar imaging , geography , engineering , mathematical analysis , programming language , waveform , aerospace engineering
In multistatic passive radar systems, the Cramér–Rao lower bound (CRLB) can be used to select the optimal illuminator of opportunity so that it provides the best estimation accuracy for target parameters. In this Letter, the monostatic and bistatic modified Cramér–Rao lower bound (MCRLB) for the Advanced Television Systems Committee (ATSC) signal, which is the pervasive digital television signal of opportunity for North American passive radar systems, is derived using the relationship between the ambiguity function of a signal and its CRLB. It is shown that the derived bistatic MCRLB for the range and velocity measurements can be used to select the optimal illuminator that exhibits the lowest bounds at each region. Examples are provided in the Columbus, OH area where the Ohio State University passive radar is located.