Dr Anindya BOSE
Verified @phys.buruniv.ac.in
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
Atanu Santra, Somnath Mahato, Surajit Kundu, and Anindya Bose
Springer Science and Business Media LLC
Somnath Mahato, Shreya Sarkar, Mrinal Goswami, Surajit Kundu, and Anindya Bose
Springer Science and Business Media LLC
Girija Nandan Kar, Pawan Verma, Somnath Mahato, Atanu Santra, Surajit Kundu, and Anindya Bose
Springer Science and Business Media LLC
Debipriya Dutta, Somnath Mahato, Sukabya Dan, Atanu Santra, Sumit Dey, and Anindya Bose
Springer Science and Business Media LLC
Mrinal Goswami, Atanu Santra, Sukabya Dan, Rowdra Ghatak, and Anindya Bose
Cambridge University Press (CUP)
AbstractIn missile test ranges, complex missions demand precise trajectory generated by radar. Both the radar and Global Navigation Satellite System (GNSS) signals are affected by atmospheric effects, degrading their accuracy and performance. The Indian Regional Navigation Satellite System/Navigation with Indian Constellation (IRNSS/NavIC) transmits signals in the S-band together with the L-band. This paper presents a novel experimental technique to improve the tracking accuracy of S-band radars using the concurrent NavIC S-band signal. The ionospheric delay using the NavIC S-band signal is calculated first, and the results are used to improve the trajectory data of simultaneously operating S-band radars. This is a unique application of the NavIC S-band signals apart from its conventional usage. During a launch mission, for low elevation angles, the ionospheric error is found to be ~130 m while at higher elevation angles the error values are found to be ~1–3 m. The concept is validated using data from a missile test mission. This report on the use of S-band GNSS signals for the correction of S-band radar range data offers a clear advantage of simplicity and accuracy.
Somnath Mahato, Debipriya Dutta, Mrinal Goswami, Surajit Kundu, and Anindya Bose
Springer Science and Business Media LLC
Mrinal Goswami, Somnath Mahato, Rowdra Ghatak, and Anindya Bose
Springer Science and Business Media LLC
Aiswarya S Pillai, Somnath Mahato, Mrinal Goswami, P Banerjee, and Anindya Bose
IEEE
GNSS has paved the way for a multitude of applications in the field of Positioning, Navigation, and Timing (PNT). Different methods and techniques like Standard Positioning Service (SPP/SPS) using a single or dual frequency receiver, Real Time Kinematic (RTK) using a Base-Rover architecture, and Precise Point Positioning (PPP) using a single dual frequency receiver and augmentation information has increased the level of accuracies and precision both in static and dynamic operations. Currently, usage of internet-based RTK positioning services has increased as the method conveniently provides improved accuracy in real-time. But network security threats and connectivity issues are points of concern in many applications, specifically for strategic sectors including Test Range. In such cases, Post Processing Kinematic RTK (PPKRTK) is a possible option. This study explores a comparative analysis of the potential of PPK-RTK with conventional RTK and SPP positioning for Test Range applications using compact, low-cost, dual frequency (CLD), multi-constellation GNSS modules. The results show a centimeter to decimeter-level precise position solution; the results would be useful in enhancing the confidence in using PPK systems for various applications, where the real-time connectivity between the RTK Base and Rover poses cyber security threats.
Somnath Mahato, Ananya Ghosh, Prity Mishra, Sukabya Dan, and Anindya Bose
IEEE
This paper presents the initial study results on the dynamic RTK performance analysis within a real-life, Indian urban environment. GPS+Galileo+QZSS hybrid RTK is carried out during mid-May 2022 in Burdwan, a town in India having various roadside situations. The presented studies are carried out using all combinations of two types of compact GNSS modules and two GNSS antennas mounted on a moving vehicle that moves through wide roads, dense residential areas having narrow roads, and areas containing buildings and trees. In different receiver and antenna combinations, it is observed that many situations are obtained when a position solution cannot be found using the compact GNSS single and dual frequency receivers. The work provides the basis for the applicability of low-cost, compact GNSS modules for dynamic RTK and the performance of such devices in constrained city environments. GNSS-based operations in such environments are to be properly planned during dynamic applications like smart city planning, and in safety-critical applications like autonomous car driving or asset management.
Somnath Mahato, Mrinal Goswami, Surajit Kundu, and Anindya Bose
Informa UK Limited
Somnath Mahato, Debipriya Dutta, Moumita Roy, Atanu Santra, Sukabya Dan, and Anindya Bose
Informa UK Limited
Somnath Mahato, Atanu Santra, Sukabya Dan, P. Banerjee, Surajit Kundu, and Anindya Bose
Informa UK Limited
Atanu Santra, Sukabya Dan, P. Banerjee, Surajit Kundu, and Anindya Bose
Springer Science and Business Media LLC
Sumit Dey, Indranil Chakraborty, P. Banerjee, and Anindya Bose
Springer Science and Business Media LLC
Aiswarya S Pillai, Somnath Mahato, Mrinal Goswami, P Banerjee, and Anindya Bose
IEEE
The evolution of multiple global and regional GNSS constellations over the last two decades has transformed the positioning, navigation, and timing (PNT) technology unprecedently by introducing an unmatched combination of precision, accuracy, convenience, and confidence. Various methods and techniques like use of dual frequency, ionospheric error-free standard positioning service (SPP/SPS), real time kinematic (RTK), and precise point positioning (PPP) have increased the level of accuracies and precision in both static and dynamic operations. This study explores the potential of dual frequency Post Processing Kinematic (PPK) RTK positioning for test range applications using compact, low cost, dual frequency (CLD), multi-constellation GNSS modules. The results show centimeter-level solution accuracy; the results would be useful in enhancing the confidence of using such systems for various applications where real time wireless connectivity between the Base and Rover is not available, or in cases where the real time connectivity between the RTK Base and Rover poses cyber security threats.
Sukabya Dan, Satarupa Chatterjee, Swaraj Pal, Santanu Deb, Chaitali Koley, and Anindya Bose
IEEE
Ionospheric scintillation is a major threat to the trans-ionospheric communication/ navigation links causing data loss, cycle slip, loss of lock in Global Navigation Satellite System (GNSS) receivers, and degradation/ disruption in navigation quality. GNSS and NavIC signals have been used for the study of the ionosphere by researchers and NavIC signals offer definite advantages for ionospheric research from India. This study presents the results of moderate to intense post-sunset scintillation cases during the autumn equinox of 2021 and vernal equinox 2022 at NavIC signals in the L5 band and S-band. In October 2021, moderate scintillation is observed in the L5 signal only on more than one NavIC satellite links. In March 2022, moderate to intense scintillation is observed in the L5 signal compared to the moderate scintillation observed in the S-Band. The results would be useful in understanding the advantages of the S-band for navigation applications.
Sukabya Dan, Atanu Santra, Somnath Mahato, Chaitali Koley, P Banerjee, and Anindya Bose
IEEE
Global Navigation Satellite System (GNSS) signals are frequently used for ionospheric studies, costly geodetic or special purpose receivers are utilized for the purpose. Compact, low-cost, dual-frequency GNSS modules are commercially available now, those are typically used for cost-effective geolocation applications. This manuscript presents the results of the study to explore the applicability of such compact modules for ionospheric studies. S4 indices are calculated and compared for GPS, GLONASS and Galileo signals for multiple frequency bands using data from two Ublox F9P compact modules concurrently operating with a geodetic GNSS receiver, and the values from both types of devices are found to be in good agreement. The results show the potential of the compact modules for the purpose in a cost and size efficient manner.
Somnath Mahato, Mrinal Goswami, Surajit Kundu, and Anindya Bose
IEEE
Global Navigation Satellite System (GNSS) Real Time Kinematic (RTK) is a popular technique for obtaining instantaneous high-quality position solutions. This manuscript presents the novel results on the usability of compact, low-cost, dual frequency GNSS modules with commercial GNSS patch antenna for RTK Rover applications instead of conventional geodetic grade, costly receiver-antenna combination. Using concurrent data from two such modules (uBlox ZED F9P and NTLab 104) and a uBlox antenna for short to long baseline lengths, the results establish the suitability of such modules for use as RTK Rovers. Up to a baseline distance of more than 200km, submeter level precision has been obtained in GPS+GLONASS hybrid operation. The results would be useful for the GNSS user community in cost and power efficient application development without dense Base station network.
Sukabya Dan, Atanu Santra, Somnath Mahato, Sumit Dey, Chaitali Koley, and Anindya Bose
Springer Singapore
Pratibha Verma, Keka Hajra, P. Banerjee, and Anindya Bose
Informa UK Limited
ABSTRACTHybrid operation with two or more Global Navigation Satellite Systems (GNSS) together with (Multi-GNSS) is now popular in the enhanced Signal-in-Space (SiS) scenario that is expected to pro...
Sukabya Dan, Atanu Santra, Somnath Mahato, Chaitali Koley, P. Banerjee, and Anindya Bose
American Geophysical Union (AGU)
Anindya Bose, Somnath Mahato, Sukabya Dan, and Atanu Santra
EDP Sciences
Global Navigation Satellite System (GNSS) uses Precise Point Positioning (PPP) technique to find out accurate geolocation information of any point. Generally, costly, geodetic GNSS receivers are used for PPP. This manuscript presents the results of studies on the usability of commercial, compact, cost-effective GNSS modules with commercial antennas for PPP in comparison to commonly used geodetic, costly receivers from India, which is a excellent location for GNSS use. Compact GNSS modules from two manufacturers are used in the study, and the encouraging results show the clear advantage of cost, size, and power requirements of such modules. The modules provide sub-cm horizontal solution accuracy which is very similar to those obtained using geodetic receivers, and around 20 cm accuracy in the vertical coordinate, which is slightly inferior to the results provided by the geodetic reveivers. Results of this novel study would be useful for implementing cost-efficient GNSS PPP in real life, in highly demanding geodetic applications including CORS establishment and PPP.
Somnath Mahato, Mrinal Goswami, Surajit Kundu, and Anindya Bose
IEEE
With the evolution of multi-GNSS in satellite navigation, there is a general tendency to combine satellites of different constellations. GPS+GLONASS hybrid operation has attracted the attention of the users for defense applications from India. An attempt has been made in this paper to compare the precession and accuracy parameters between the GPS and GPS+GLONASS combination for test range applications in the Indian defense programs. It has been observed that GPS+GLONASS hybrid operation provides a slightly better 2-Dimensional (2d) performance while the standalone GPS offers slightly improved 3-Dimensional (3d) performance as found from the precession parameters. This can be an important finding in applications of Multi-GNSS in Indian missiles and other airborne vehicles, and also for calibration of missile and satellite test ranges of India where the height is also an important parameter for consideration.
Debipriya Dutta, Somnath Mahato, Sukabya Dan, Atanu Santra, P. Banerjee, and Anindya Bose
IEEE
NavIC is India's own regional satellite-based navigation system that operates in L5 and in the unique S-band of frequencies. Still now, NavIC single point positioning is done and NavIC PPP or RTK is not availabel. Therefore, to find out a method for obtaining the best possible solution quality using NavIC dual frequency operation, this paper studies the ionospheric delay in L5 and S bands and the associated dual-frequency position solution qualities from two locations in eastern India. It is seen that the ionospheric delay (ionodelay) values are least during early morning hours (3–6 am IST) and the ionodelay values are less in S-Band. The solution qualities are also found to be the best during that same time span as observed through repeated data for several days. Till the availability of NavIC PPP, differential NavIC or NavIC RTK, therefore, for obtaining the best possible precise location solution in NavIC standalone mode, data should be collected during 3–6 am IST.
Mrinal Goswami, Somnath Mahato, Surajit Kundu, Rowdra Ghatak, and Anindya Bose
IEEE
Self-reliance in satellite-based navigation is of immense importance to modern-day strategic missile defense programs. Indian Space Research Organization (ISRO) has designed, developed and deployed an indigenous regional satellite-based navigation system, Navigation using Indian Constellation (NavIC). This paper reviews the present status of multi-constellation GNSS over the Indian region and its applications in the Indian Missile Program, and the advantages of using NavIC in such strategic programs. The present configuration of NavIC and the roadmap ahead gives a promising scope of self-reliance in these critical strategic programs of Indian Defence. In the future, NavIC will turn out to be a game-changer in the Indian missile program both during peacetime and war scenarios.