@article{62334b5c-b150-4817-b6ce-c6a1bdaac3a5,
  abstract     = {{<p>Many forms of small-size radars suffer from minor clock oscillations due to crystalline impurities in their internal clocks, causing time-varying clock offsets between the transmitter and the receivers. This offset causes a bias and an increased variance in the positioning of close-range targets, limiting the achievable accuracy well beyond the expected estimation limitations. Furthermore, an approximative model ignoring the curvature of the impinging wavefront is generally also used to form computationally efficient estimators. Such approximations will further limit the achievable performance, especially for close-range targets. In this paper, we examine the effects of both these forms of performance degradations, deriving analytical bounds on the expected achievable performance due to both forms of model mismatches. We further introduce a computationally efficient and robust direction of arrival estimator that partly allows for these model mismatches, significantly improving the estimation performance for close-range reflectors as compared to traditional estimators.</p>}},
  author       = {{Jansson, Andreas and Jakobsson, Andreas}},
  issn         = {{0165-1684}},
  keywords     = {{Clock jitter; DOA estimation; Near-field localization; Radar}},
  language     = {{eng}},
  publisher    = {{Elsevier}},
  series       = {{Signal Processing}},
  title        = {{Locating close-range radar reflections measured using time-varying clock offsets}},
  url          = {{http://dx.doi.org/10.1016/j.sigpro.2025.110418}},
  doi          = {{10.1016/j.sigpro.2025.110418}},
  volume       = {{242}},
  year         = {{2026}},
}