Zobrazeno 1 - 10
of 88
pro vyhledávání: '"Inder J. Gupta"'
Autor:
Jacob Compaleo, Inder J. Gupta
Publikováno v:
Sensors, Vol 21, Iss 15, p 5164 (2021)
Recently, we proposed a Spectral Domain Sparse Representation (SDSR) approach for the direction-of-arrival estimation of signals incident to an antenna array. In the approach, sparse representation is applied to the conventional Bartlett spectra obta
Externí odkaz:
https://doaj.org/article/813618f120cf41ddb6dcbd5f732af4e0
Autor:
Jacob Compaleo, Inder J. Gupta
Publikováno v:
Sensors, Vol 21, Iss 1, p 77 (2020)
A new technique for high-resolution direction of arrival estimation is presented. The method utilizes the traditional Bartlett spectra and sparse representation to locate emitters in single and multiple emitter scenarios. A method for selecting the s
Externí odkaz:
https://doaj.org/article/1425417ab5bf4eb4a697259b43783bc6
Publikováno v:
Position, Navigation, and Timing Technologies in the 21st Century
Publikováno v:
Navigation. 63:393-404
This paper presents experimental verification of an optimal adaptive filtering algorithm with zero antenna-induced biases for Global Navigation Satellite Systems adaptive antenna arrays utilizing Space Time Adaptive Processing. GPS L1 C/A-coded signa
Autor:
Andrew Kintz, Inder J. Gupta
Publikováno v:
IEEE Transactions on Antennas and Propagation. 64:4836-4847
We introduce a modified multiple signal classification (MUSIC) algorithm to estimate the directions of arrival (DOAs) of multiple radio frequency signals. We specifically consider an antenna array with an imperfectly calibrated array response. The mo
Autor:
Jacob Compaleo, Inder J. Gupta
Publikováno v:
2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting.
A new technique for high-resolution direction of arrival estimation is presented. The method utilizes the traditional beamforming approach and sparse representation to locate signals in single and multiple emitter scenarios. An example is provided wh
Publikováno v:
Proceedings of the IEEE. 104:1195-1206
Adaptive antenna arrays have become the system of choice for protecting Global Navigation Satellite Systems (GNSS) receivers in strong radio frequency interference environments. GNSS receiver adaptive antenna arrays have small aperture (of the order
Autor:
Inder J. Gupta, Leo Tchorowski
Publikováno v:
2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
Accurate antenna manifolds are desired for many signal processing algorithms. In situ antenna measurements are the most accurate way to obtain antenna manifolds on the platform of interest, but are often impractical or impossible to obtain. Instead,
Publikováno v:
IGARSS
Recent results from CYGNSS measurements over land show the importance of coherent scattering. It is envisioned that future GNSS-R instruments will have the ability to separate and detect coherent scattering and downlink complex-valued coherent DDM me
Autor:
Inder J. Gupta, Ying Chieh Chuang
Publikováno v:
Navigation. 61:323-330
A method for on-the-fly estimation of antenna induced biases in Space-Frequency Adaptive Processing (SFAP) based antenna arrays employed in Global Navigation Satellite System (GNSS) receivers is presented. The method uses real time SFAP weights along