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JCM 2024 Vol.19(10): 466-475
DOI: 10.12720/jcm.19.10.466-475

Advanced Algorithms for Pseudo-Range Estimation and Positioning Accuracy in Challenging Satellite Visibility Conditions

P. Sirish Kumar1,*, A. Jayalaxmi1, V. B. S. Srilatha Indira Dutt2, P. Krishna Rao1, P. Kameswara Rao1, and L. Ganesh3
1Department of Electronics and Communication Engineering, Aditya Institute of Technology and Management, Tekkali, Andhra Pradesh, India
2Department of Electronics and Communication Engineering, GITAM University (deemed to be University), Visakhapatnam, Andhra Pradesh, India
3Department of Electronics and Communication Engineering, Gayatri Vidya Parishad College of Engineering for Women, Visakhapatnam, India
Email: sirishdg@gmail.com (P.S.K.); jayalaxmi.anem@gmail.com (A.J.); srilatha06.vemuri@gmail.com (V.B.S.S.I.D.); pkr.aitam@gmail.com (P.K.R.); kameshpedada@gmail.com (P.K.R.); ganeshlaveti2010@gmail.com (L.G.)
*Corresponding author

Manuscript received April 3, 2024; revised July 22, 2024; accepted August 2, 2024; published October 10, 2024.

Abstract—Accurate Global Positioning System (GPS) positioning is critical for numerous applications, yet traditional navigation algorithms such as Gradient Descent (GD), Least Squares (LS), and Weighted Least Squares (WLS) often face challenges in terms of convergence speed, computational complexity, and robustness, especially under conditions of low satellite visibility. This paper proposes a new navigation solution, the Levenberg (LVB) algorithm, designed to address these challenges. The LVB algorithm integrates the strengths of GD and LS, using an adaptive learning coefficient to provide optimal estimates without encountering the inverse problems associated with LS. We evaluated the performance of LVB alongside GD, LS, and WLS using real GPS receiver data collected from the Indian Institute of Science (IISc) in Bangalore. Our results demonstrate that LVB outperforms the traditional methods, delivering more accurate and reliable GPS position estimates, particularly in scenarios with limited satellite visibility, which is beneficial for users in the Indian subcontinent.
 

Keywords—gradient descent, least squares, levenberg, pseudo-range, time or arrival, weighted least squares


Cite: P. Sirish Kumar, A. Jayalaxmi, V. B. S. Srilatha Indira Dutt, P. Krishna Rao, P. Kameswara Rao, and L. Ganesh, “Advanced Algorithms for Pseudo-Range Estimation and Positioning Accuracy in Challenging Satellite Visibility Conditions," Journal of Communications, vol. 19, no. 10, pp. 466-475, 2024.

 

Copyright © 2024 by the authors. This is an open access article distributed under the Creative Commons Attribution License (CC BY-NC-ND 4.0), which permits use, distribution and reproduction in any medium, provided that the article is properly cited, the use is non-commercial and no modifications or adaptations are made.