摘要 :
The incoherent scatter radar (ISR) technique provides an efficient tool for measuring ionosphere parameters from D region to the upper F region. The conventional methods find the autocorrelation function first and then calculate t...
展开
The incoherent scatter radar (ISR) technique provides an efficient tool for measuring ionosphere parameters from D region to the upper F region. The conventional methods find the autocorrelation function first and then calculate the scattering spectrum estimation with Fourier transform. In this paper, we deal with the alternating code with a modified parameter model-based spectrum estimation method. Based on the weighted revising to the ambiguity function and sign correction to different sub-code of alternating code, the AR model is used to represent the autocorrelation function. Finally the scattering spectrum with high-resolution is obtained by a long-time accumulation. Experiments on the real data demonstrate the validity of the presented method.
收起
摘要 :
The incoherent scatter radar (ISR) technique provides an efficient tool for measuring ionosphere parameters from D region to the upper F region. The conventional methods find the autocorrelation function first and then calculate t...
展开
The incoherent scatter radar (ISR) technique provides an efficient tool for measuring ionosphere parameters from D region to the upper F region. The conventional methods find the autocorrelation function first and then calculate the scattering spectrum estimation with Fourier transform. In this paper, we deal with the alternating code with a modified parameter model-based spectrum estimation method. Based on the weighted revising to the ambiguity function and sign correction to different sub-code of alternating code, the AR model is used to represent the autocorrelation function. Finally the scattering spectrum with high-resolution is obtained by a long-time accumulation. Experiments on the real data demonstrate the validity of the presented method.
收起
摘要 :
Despite numerous studies devoted to the comparative analysis of the super resolution algorithms, it should be noted that in each of the studies are compared only a few of the methods at the same time, and for the separate indicato...
展开
Despite numerous studies devoted to the comparative analysis of the super resolution algorithms, it should be noted that in each of the studies are compared only a few of the methods at the same time, and for the separate indicators. The obtained private results, often conflicting, do not allow a complete evaluation of the existing methods. Therefore, the problem of comparative analysis of super resolution methods remains valid.
收起
摘要 :
Despite numerous studies devoted to the comparative analysis of the super resolution algorithms, it should be noted that in each of the studies are compared only a few of the methods at the same time, and for the separate indicato...
展开
Despite numerous studies devoted to the comparative analysis of the super resolution algorithms, it should be noted that in each of the studies are compared only a few of the methods at the same time, and for the separate indicators. The obtained private results, often conflicting, do not allow a complete evaluation of the existing methods. Therefore, the problem of comparative analysis of super resolution methods remains valid.
收起
摘要 :
Humans interpret the surroundings through the five fundamental senses – sight, sound, smell, taste, and touch. The lack or loss of any one of these senses can disable an individual considerably. Individuals with multiple sensory ...
展开
Humans interpret the surroundings through the five fundamental senses – sight, sound, smell, taste, and touch. The lack or loss of any one of these senses can disable an individual considerably. Individuals with multiple sensory impairments also exist today, thereby making their life slightly more complicated than the others. The research proposes a unique design of sensory substitutions that can facilitate individuals to overcome sensory impairments. The system offers intelligent crosslinking and association of ‘senses’ for individuals with specific sensory disabilities and in-turn enables them to gather information, interpret and comprehend the world better much like normal people.
收起
摘要 :
Humans interpret the surroundings through the five fundamental senses – sight, sound, smell, taste, and touch. The lack or loss of any one of these senses can disable an individual considerably. Individuals with multiple sensory ...
展开
Humans interpret the surroundings through the five fundamental senses – sight, sound, smell, taste, and touch. The lack or loss of any one of these senses can disable an individual considerably. Individuals with multiple sensory impairments also exist today, thereby making their life slightly more complicated than the others. The research proposes a unique design of sensory substitutions that can facilitate individuals to overcome sensory impairments. The system offers intelligent crosslinking and association of ‘senses’ for individuals with specific sensory disabilities and in-turn enables them to gather information, interpret and comprehend the world better much like normal people.
收起
摘要 :
A summation of N multi-temporal channels is described to improve the radiometric resolution of SAR data. Whilst preserving the radiometry of each channel this method allows the variance to be reduced by a factor N.
摘要 :
Topographic change due to sedimentation and erosion of tidal flat is important for recognizing environmental changes and possible threatens. The tidal flat generally has small topographic variations and high moisture soil surfaces...
展开
Topographic change due to sedimentation and erosion of tidal flat is important for recognizing environmental changes and possible threatens. The tidal flat generally has small topographic variations and high moisture soil surfaces. The conventional SAR interferometric techniques cannot be used for generating DEMs in these tidal flats due to relatively short baseline. In this study, we developed a long-baseline airborne interferometric SAR (InSAR) system that has small ambiguity height and collected airborne InSAR data in the western coast of Korean peninsula. The constructed topographies using the long-baseline airborne InSAR were compared with GPS-RTK measurements.
收起
摘要 :
Topographic change due to sedimentation and erosion of tidal flat is important for recognizing environmental changes and possible threatens. The tidal flat generally has small topographic variations and high moisture soil surfaces...
展开
Topographic change due to sedimentation and erosion of tidal flat is important for recognizing environmental changes and possible threatens. The tidal flat generally has small topographic variations and high moisture soil surfaces. The conventional SAR interferometric techniques cannot be used for generating DEMs in these tidal flats due to relatively short baseline. In this study, we developed a long-baseline airborne interferometric SAR (InSAR) system that has small ambiguity height and collected airborne InSAR data in the western coast of Korean peninsula. The constructed topographies using the long-baseline airborne InSAR were compared with GPS-RTK measurements.
收起
摘要 :
A method of signal analysis is presented. It is based on mathematical morphology of gray scale functions. The proposed representations are translation invariant and use simple functions as the components of the representation. The...
展开
A method of signal analysis is presented. It is based on mathematical morphology of gray scale functions. The proposed representations are translation invariant and use simple functions as the components of the representation. The analysis is unique and the signal can be reconstructed from its components. This method can be used for multiscale signal representation and signal recognition. It can also be used when separate processing of the simple morphological components is desirable. Simulation examples are given.
收起
原文获取