In this paper, a new technique for Synthetic Aperture Radar (SAR) automatic target recognition (ATR) is developed, which is builded upon Two-Dimensional Principle Component Analysis (2DPCA). First, 2DPCA is applied to...
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The effect of PC (Principal Component) number upon SAR ATR (Synthetic Aperture Radar Automatic Target Recognition) performance based on PCA (Principal Component Analysis) is analyzed. First, PCA features are extracted...
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Radiotelephony communication has a special grammatical structure and pronunciation, and it is difficult to apply the model of generic speech recognition directly to the field of radiotelephony communication. We propos...
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In Global positioning system (GPS), adaptive beamforming is an effective method for enhancing the desired signal and suppressing interferences simultaneously. The direction-of-arrival (DOA) of the desired signal, howe...
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Parametric imaging methods for the curvilinear synthetic aperture radar (SAR) are always used the extracted three- dimensional (3-D) target feature (amplitude and 3-D position) to reconstruct the 3-D target image. The...
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ISBN:
(纸本)9781849190107
Parametric imaging methods for the curvilinear synthetic aperture radar (SAR) are always used the extracted three- dimensional (3-D) target feature (amplitude and 3-D position) to reconstruct the 3-D target image. Their efficient implementations, however, are only suitable for small synthetic aperture case. In this paper, a model is presented for describing the scatterer's echo received by large synthetic aperture, and based on this model, an efficient parametric method is proposed for imaging the 3-D target. The proposed method removes the coupling between the range and cross- range, which is introduced by range migration. With the decoupled data, the proposed method can replace the high dimensional search with a series of lower dimensional searches, which results in the feature estimates being extracted efficiently. The simulation results show that the method proposed in this paper can achieve the objective of the complex 3-D imaging, and the feature estimates can be reach the corresponding CRBs at low signal-to-noise ratio.
Strong rebar echo which can't be eliminated in tx domain directly will disturb the detection and discrimination of the interested targets like cryptic disasters. This paper presents the application of Hyp-curvelet...
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Downward looking ground penetrating radar (GPR) has been considered a viable technology for landmine detection. For such a GPR with the antennas positioned very close to the ground surface, the reflections from the gr...
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Downward looking ground penetrating radar (GPR) has been considered a viable technology for landmine detection. For such a GPR with the antennas positioned very close to the ground surface, the reflections from the ground surface, i.e., the ground bounce, are very strong and can completely dominate the weak returns from shallowly buried non-metallic mines. Hence, one of the key challenges of using GPRs for landmine detection is to remove the ground bounce as completely as possible without altering the landmine return. The ground bounce varies with surface roughness and soil conditions and lead to performance degradation for many ground bounce removal algorithms without reference data selection. In this paper we introduce NHD-based reference data selection methods for ground bounce removal. Experimental results are provided to illustrate the performance of the proposed method.
An algorithm for detection of the air maneuvering target based on the reconstruction of time sampling is proposed. Space sampling is used to reconstruct time sampling, which is equivalent to increasing the number of t...
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During the intensive launch of suborbital vehicles, in order to meet the demand of short flight distance of civil aircraft and low workload of controllers, this paper proposes a redirect path planning method for subor...
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One of the key technologies to make UAVs intelligent is route planning. The traditional A* algorithm has a series of problems when performing UAV path planning, such as the planned path is not the actual optimal route...
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