A Target Parameters Estimation Method for CP-OTFS Based Terrestrial Radar System

Orthogonal time-frequency space (OTFS) modulation, which exhibits significant advantages in high-speed mobile communication scenarios, holds strong potential in the field of radar applications. The existing state-of-the-art target parameter estimation methods for cyclic prefix OTFS (CP-OTFS) based r...

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Bibliographic Details
Published in:IEEE wireless communications letters 2024-11, p.1-1
Main Authors: Miao, Qilong, Liang, Jing, Zhang, Ge, Han, Jiachen
Format: Article
Language:English
Subjects:
CP-OTFS
Delays
Estimation
JRC
Matched filters
minimum mean squared error
OFDM
Radar
Receivers
Signal processing algorithms
Spaceborne radar
Symbols
target parameter estimation
Wireless communication
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Summary:Orthogonal time-frequency space (OTFS) modulation, which exhibits significant advantages in high-speed mobile communication scenarios, holds strong potential in the field of radar applications. The existing state-of-the-art target parameter estimation methods for cyclic prefix OTFS (CP-OTFS) based radar systems suffer from inaccuracies in target scattering coefficient (TSC) estimation under conditions of multiple targets, low bandwidth and short duration. In this work, the equivalent matched filter (EMF) algorithm is designed. Compared to the matched filter (MF) algorithm, EMF intuitively explains the input-output relationship of CP-OTFS based radar, but it remains susceptible to interference from multiple targets. In order to mitigate this impact, the two-stage matched filter-based minimum mean squared error (TS-MF-MMSE) algorithm, a refined TSC estimation algorithm for terrestrial CP-OTFS based radar system is proposed. Simulation results demonstrate the superior performance of proposed algorithm in TSC estimation in comparison with EMF and the state-of-the-art.
ISSN:2162-2337
2162-2345
DOI:10.1109/LWC.2024.3497959