Reconstruction of Range-Doppler Map Corrupted by FMCW Radar Asynchronization

Frequency-modulated continuous wave (FMCW) radar system synchronization using external clock signals can cause repeated Range-Doppler (R-D) map corruption when clock signal asynchronization problems occur between the transmitter and receiver. In this paper, we propose a signal processing method for...

Full description

Saved in:
Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2023-06, Vol.23 (12), p.5605
Main Authors: Lee, Kyung-Min, Lee, In-Seong, Shin, Hee-Sub, Ok, Jae-Woo, Youn, Jae-Hyuk, You, Eung-Noh, Yang, Jong-Ryul, Kim, Kyung-Tae
Format: Article
Language:English
Subjects:
bistatic radar
Continuous radiation
Corruption
Fourier transforms
Frequency modulation
frequency-modulated continuous wave
Indoor environments
Radar equipment
Radar systems
Reconstruction
Signal processing
Synchronism
synchronization
Transmitters
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Frequency-modulated continuous wave (FMCW) radar system synchronization using external clock signals can cause repeated Range-Doppler (R-D) map corruption when clock signal asynchronization problems occur between the transmitter and receiver. In this paper, we propose a signal processing method for the reconstruction of the corrupted R-D map owing to the FMCW radar's asynchronization. After calculating the image entropy for each R-D map, the corrupted ones are extracted and reconstructed using the normal R-D maps acquired before and after the individual maps. To verify the effectiveness of the proposed method, three target detection experiments were conducted: a human target detection in an indoor environment and a wide place and a moving bike-rider target detection in an outdoor environment. The corrupted R-D map sequence of observed targets in each case was reconstructed properly and showed the validity by comparing the map-by-map range and speed changes in the detected target with the ground-truth information of the target.
ISSN:1424-8220
1424-8220
DOI:10.3390/s23125605