A Novel Interference Detection Method of STAP Based on Simplified TT Transform
Joint Authors
Liu, Hanwei
Wang, Qiang
Zhang, Yongshun
Guo, Yiduo
Source
Mathematical Problems in Engineering
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-9, 9 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-11-21
Country of Publication
Egypt
No. of Pages
9
Main Subjects
Abstract EN
Training samples contaminated by target-like signals is one of the major reasons for inhomogeneous clutter environment.
In such environment, clutter covariance matrix in STAP (space-time adaptive processing) is estimated inaccurately, which finally leads to detection performance reduction.
In terms of this problem, a STAP interference detection method based on simplified TT (time-time) transform is proposed in this letter.
Considering the sparse physical property of clutter in the space-time plane, data on each range cell is first converted into a discrete slow time series.
Then, the expression of simplified TT transform about sample data is derived step by step.
Thirdly, the energy of each training sample is focalized and extracted by simplified TT transform from energy-variant difference between the unpolluted and polluted stage, and the physical significance of discarding the contaminated samples is analyzed.
Lastly, the contaminated samples are picked out in light of the simplified TT transform-spectrum difference.
The result on Monte Carlo simulation indicates that when training samples are contaminated by large power target-like signals, the proposed method is more effective in getting rid of the contaminated samples, reduces the computational complexity significantly, and promotes the target detection performance compared with the method of GIP (generalized inner product).
American Psychological Association (APA)
Wang, Qiang& Zhang, Yongshun& Liu, Hanwei& Guo, Yiduo. 2017. A Novel Interference Detection Method of STAP Based on Simplified TT Transform. Mathematical Problems in Engineering،Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1189533
Modern Language Association (MLA)
Wang, Qiang…[et al.]. A Novel Interference Detection Method of STAP Based on Simplified TT Transform. Mathematical Problems in Engineering No. 2017 (2017), pp.1-9.
https://search.emarefa.net/detail/BIM-1189533
American Medical Association (AMA)
Wang, Qiang& Zhang, Yongshun& Liu, Hanwei& Guo, Yiduo. A Novel Interference Detection Method of STAP Based on Simplified TT Transform. Mathematical Problems in Engineering. 2017. Vol. 2017, no. 2017, pp.1-9.
https://search.emarefa.net/detail/BIM-1189533
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1189533