By Topic

Enhanced visibility of maneuvering targets for high-frequency over-the-horizon radar

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Kun Lu ; Dept. of Electron. Eng., Shanghai JiaoTong Univ., China ; Xingzhao Liu

This paper describes a processing algorithm based on high-order ambiguity function (HAF) that increases visibility of maneuvering targets in HF over-the-horizon radar (OTHR). For the presence of the echo backscattered by the target that has significantly varying radial velocity within a coherent integration time (CIT), it is difficult for traditional coherent processing to centralize energy and peaks in Doppler spectrum. Due to the polynomial phase property in the Doppler spectrum of maneuvering target radar echo, HAF is introduced as an efficient parametric tool to estimate the parameters of the polynomial-phase model. And a compensation process follows to eliminate the coherent integration loss (CIL) caused by irregular motion of target. Finally, this method is generalized to the case of multiple maneuvering targets. The corresponding information of acceleration and higher-order radial components after motion decomposition can be extracted directly and is benefit for consequent missions, such as detection and tracking. The experimental results are given to illuminate the validity and efficiency of the proposed method.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:53 ,  Issue: 1 )