Open Access
Weak Target Detection Based on Keystone Transform
Reads0
Chats0
TLDR
A novel motion compensation method based on keystone transform is presented, which can correct range migration without the exact value of target velocity, and as a result, make the accumulation time free of the restriction due to target motion.Abstract:
The improvement of the capability to detect moving target with very small radar signature is usually realized by long term accumulation.According to the design principle of conventional PD(Pulse Doppler) radar,target's range migration can't exceed half of the range resolution cell in coherent integration time,which means that the accumulation time is restrained by target's motion.For high range resolution radar or the radar system focusing on the detection of fast moving targets,such a restriction is difficult to satisfy.In this paper,a novel motion compensation method based on keystone transform is presented,which can correct range migration without the exact value of target velocity,and as a result,make the accumulation time free of the restriction due to target motion.read more
Citations
More filters
Journal ArticleDOI
Axis rotation MTD algorithm for weak target detection
TL;DR: A novel coherent integration detection algorithm, axis rotation moving target detection (AR-MTD), is proposed, which eliminates the linear range migration by rotating two-dimensional echoes data plane, and realizes coherent integration via moving target Detection (MTD).
Journal ArticleDOI
Detection of constant radial acceleration weak target via IAR-FRFT
TL;DR: A novel coherent integration algorithm, improved axis rotation fractional Fourier transform (IAR-FRFT), is proposed to detect the weak targets with a constant radial acceleration to eliminate the linear range migration and alleviate the nonlinear range migration via anImproved axis rotation transform.
Proceedings ArticleDOI
Application research of keystone transform in weak high-speed target detection in low-PRF narrowband Chirp radar
TL;DR: The results of 128 echo pulses procession show that the SNR could be enhanced by 6 dB, which confirm the effectiveness of the coherent integration method of envelope migration compensation and improve the ability of weak high speed target detection.
Journal ArticleDOI
A Novel Imaging Method for Fast Rotating Targets Based on the Segmental Pseudo Keystone Transform
TL;DR: A novel imaging method based on the segmental pseudo Keystone transform, which is designed to realize MTRC correction, is proposed, which makes the algorithm feasible and simple.
Journal ArticleDOI
Improved axis rotation MTD algorithm and its analysis
TL;DR: The result indicates that IAR-MTD may effectively detect the weak moving targets with constant radial velocity and it is compatible with MTD radar system.