Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Hari B. Hablani"'
Autor:
Hari B. Hablani, A. Althaf
Publikováno v:
IETE Technical Review. 39:827-837
We assess the estimation accuracy for two static baselines (350 m and 8 km) with NavIC L5 double-differenced (DD) pseudoranges using weighted and recursive least-square techniques for a day. Additi...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10a3f16b3214cad3b78ca3ffac05fe8b
https://doi.org/10.1080/02564602.2021.1912660
https://doi.org/10.1080/02564602.2021.1912660
Autor:
Hari B. Hablani, Althaf Azeez
Publikováno v:
NAVIGATION. 67:347-364
Our objective in this paper is to assess all errors in NavIC's pseudorange so that they can be mitigated or accounted for appropriately in the dynamics model to achieve high-accuracy navigation. Multipath errors in the L5 and S1 pseudoranges are diff
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9f4c9c430018a01cd873eab4f5ad22a5
https://doi.org/10.1002/navi.355
https://doi.org/10.1002/navi.355
Autor:
Hari B. Hablani, A. Althaf
Publikováno v:
Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020).
Our objective is to assess the PVT accuracy of a stationary receiver using NavIC and explore ways to improve it using single and dual-frequency observables. We also propose a method to extend Breivik et al. approach of estimating multipath error usin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::af9ddb753f19369a07e59e7522c9c85a
https://doi.org/10.33012/2020.17632
https://doi.org/10.33012/2020.17632
Autor:
Hari B. Hablani, A. Althaf
Publikováno v:
Proceedings of the 2020 International Technical Meeting of The Institute of Navigation.
The estimation accuracy of a short baseline with NavIC L5 and S1 and GPS L1 differential pseudoranges from the primary service area is presented. The mean of the single-difference (SD) NavIC L5 and S1 pseudorange errors differ by 45 cm. Using single-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5246eb9c8672d1acab9a1c717f9cbe86
https://doi.org/10.33012/2020.17155
https://doi.org/10.33012/2020.17155
Autor:
Vinod Kumar, Hari B. Hablani
Publikováno v:
Journal of Guidance, Control, and Dynamics. 40:563-583
In this paper, the reduced dynamic autonomous formation control of geostationary-Earth-orbit satellites using Indian Regional Navigation Satellite System observables is presented. Generally, the navigation signal is used to determine the position, ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1549c225f7b2df1c7c720afb701cd18c
https://doi.org/10.2514/1.g001652
https://doi.org/10.2514/1.g001652
Autor:
Hari B. Hablani, Baishali Panda
Publikováno v:
2019 9th International Conference on Recent Advances in Space Technologies (RAST).
This paper is concerned with attitude estimation and pointing accuracy of a remote sensing satellite with off-nadir spinning scatterometer using GPS (Global Positioning System) carrier phase signals. The spinning scatterometer disturbs the three-axis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a597d323acb9120e1a4ce751288aa14
https://doi.org/10.1109/rast.2019.8767823
https://doi.org/10.1109/rast.2019.8767823
Autor:
Hari B. Hablani, Vinod K. Saini
Publikováno v:
IFAC Proceedings Volumes. 47:234-241
This paper deals with tracking of an airborne target with mechanically steered gimbal-mounted airborne radar. The objective is to keep the airborne target on the boresight of the radar antenna after the radar has gathered initial and less accurate in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::873a4cba9b624e25641c8620b0863d36
https://doi.org/10.3182/20140313-3-in-3024.00029
https://doi.org/10.3182/20140313-3-in-3024.00029
Autor:
Vaibhav G. Awale, Hari B. Hablani
Publikováno v:
IFAC Proceedings Volumes. 47:635-642
This paper considers the vehicle navigation problem for an autonomous underwater vehicle (AUV) with six degrees of freedom. We approach this problem using an error state formulation of the Kalman filter. Integration of the vehicle's high-rate inertia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c895621ba2cbe8dd074a0ff021f5630
https://doi.org/10.3182/20140313-3-in-3024.00031
https://doi.org/10.3182/20140313-3-in-3024.00031
Publikováno v:
IFAC Proceedings Volumes. 47:627-634
This paper addresses the problem of the compensation of the motion errors in an airborne synthetic aperture radar (SAR). The motion errors are caused by the sensor's unintended translational and rotational motion. The motion errors cause amplitude an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66adf159be237e3c648505381f1aea1e
https://doi.org/10.3182/20140313-3-in-3024.00065
https://doi.org/10.3182/20140313-3-in-3024.00065
Autor:
Ritesh kumar Sharma, Hari B. Hablani
Publikováno v:
IFAC Proceedings Volumes. 47:200-204
The GPS code phase measurements provide accuracy about 5-20 m. This accuracy level is not sufficient for some applications such as aircraft landing. Precise positioning can be achieved by using differential carrier phase measurements. But these measu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3bf5cca4058b2b5e6daa1313d1474395
https://doi.org/10.3182/20140313-3-in-3024.00224
https://doi.org/10.3182/20140313-3-in-3024.00224