Fundamental Performance Bounds for Carrier Phase Positioning in LEO-PNT Systems

Jeongwan Kang; Paulson Eberechukwu N; Jeonghaeng Lee; Henk Wymeersch; Sunwoo Kim

ICASSP 2024accepted0 citations

Fundamental Performance Bounds for Carrier Phase Positioning in LEO-PNT Systems

Jeongwan Kang, Paulson Eberechukwu N, Jeonghaeng Lee, Henk Wymeersch, Sunwoo Kim

Abstract

In this paper, we derive the Cramér-Rao bounds (CRBs) on the positioning errors for narrow-band low earth orbit positioning, navigation, and timing (LEO-PNT) systems. Fisher information analysis is performed to characterize the CRBs for errors in Doppler and carrier phase measurements. In addition, we analyze the effect of the carrier phase and Doppler on the CRB for positioning. Numerical simulations were conducted in different settings. To show the relevance of CRB, we compare our results to the maximum likelihood (ML) estimator. Our findings show that using the carrier phase significantly improves the positioning in LEO-PNT systems.

BibTeX

@inproceedings{icassp2024_fundamentalperfo,
  title = {Fundamental Performance Bounds for Carrier Phase Positioning in LEO-PNT Systems},
  author = {Jeongwan Kang and Paulson Eberechukwu N and Jeonghaeng Lee and Henk Wymeersch and Sunwoo Kim},
  booktitle = {ICASSP 2024},
  year = {2024}
}