SPARSE TIME-FREQUENCY REPRESENTATION BASED FEATURE EXTRACTION METHOD FOR LANDMINE DISCRIMINATION

被引：7
作者：
Wang, Y. [1 ]
Song, Q. [1 ]
Jin, T. [1 ]
Shi, Y. [1 ]
Huang, X. [1 ]
机构：
[1] Natl Univ Def Technol, Sch Elect Sci & Engn, Changsha 410073, Hunan, Peoples R China
来源：
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER | 2012年 / 133卷
基金：
中国国家自然科学基金;
关键词：
GROUND-PENETRATING RADAR; SYNTHETIC-APERTURE RADAR; MINE DETECTION; TARGET RECOGNITION; SAR; SYSTEM; PERFORMANCE; SIMULATION; CLUTTER; MODEL;
D O I：
10.2528/PIER12082104
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Low-frequency ultra-wideband synthetic aperture radar is a promising technology for landmine detection. According to the scattering characteristics of body-of-revolution (BOR) along with azimuth angles, a discriminator based on Bayesian decision rule is proposed, which uses sequential features, i.e., double-hump distance. First, the algorithm estimates the target scatterings in all azimuth angles based on regions of interest. Second, sequential aspect features are extracted by sparse time-frequency representation. Third, the distributions of features are obtained by training samples, and then the posterior probability of landmine class is computed as an input to the classifier adopting Mahalanobis distance. The experimental results indicate that the proposed algorithm is effective in BOR target discrimination.
引用
收藏
页码：459 / 475
页数：17
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