Research

Research interests

My research interests centre about the use of Global Navigation Satellite Systems (GNSSs), most notably GPS, for a multitude of precise positioning and navigation applications.  Specific application areas include satellite orbit determination, GNSS surveying, and vehicle tracking.  This research requires development of positioning algorithms, which include filters, functional models, stochastic models, and prediction models to mitigate physical affects.  Resent algorithm research has focused on improving the performance of the Precise Point Positioning technique.

 

Current primary research areas

  • Precise Point Positioning (PPP) algorithm and application development
  • Software-defined GNSS receiver development
  • Network RTK evaluation and certification
  • GNSS-based precise orbit determination (POD) algorithm development

 

Recent refereed publications (2009-present)

  • Mander, A. and S. Bisnath, S. (2012).  “GPS-based precise orbit determination of low Earth orbiters with limited resources.”  GPS Solutions, DOI 10.1007/s10291-012-0303-7.
  • Bisnath, S. and Collins, P. (2012).  “Recent developments in Precise Point Positioning.”  Geomatica, 66(2): 375-385.
  • Lee, R., S. Bisnath, H. Chesser, A. Ng, G. Vukovich, D. Sun, S. Gleason, and A. de Ruiter (2012).  “Northern communication and GNSS science nanosatellite constellation mission.”  In Novel ideas for nanosatellite constellation missions, Ed. R. Sandau, S. Nakasuka, R. Kawashima, and J. Sellers, IAA Book Series, Vol. 1 No. 1, IAA, Paris, 164 p.
  • Collins, P., S. Bisnath, F. Lahaye, and P. Héroux (2010).  “Undifferenced GPS ambiguity resolution using the Decoupled Clock Model and ambiguity datum fixing.”  Navigation, 57(2): 123-136.
  • Pagiatakis, S., S. Bisnath, C. Armenakis, and J.-G. Wang (2009).  “The establishment of a geomatics engineering program and its challenges: The York University case.”  Geomatica, 63(2): 97-108.
  • Dolgansky, A., A. Szeto, and S. Bisnath (2009).  “Software simulation of multiple Global Navigation Satellite System measurements.” In 2009 IEEE Toronto International Conference – Science and Technology for Humanity, 26-27 September 2009 Toronto, Ontario, Canada, IEEE Xplorer: 322-327.
  • Bisnath, S. and Y. Gao (2009).  “Current state of precise point positioning and future prospects and limitations.”  International Association of Geodesy Symposia – Observing our changing earth,” (Ed.) M. Sideris, 133: 615-623.
  • Santos, M. R.B. Langley, R.F. Leandro, S. Pagiatakis, S. Bisnath, R. Santerre, M. Cocard, A. El-Rabbany, R. Landry, H. Dragert, P. Héroux and P. Collins (2009).  “Next-generation algorithms for navigation, geodesy and earth sciences under modernized Global Navigation Satellite Systems (GNSS).” International Association of Geodesy Symposia – Observing our changing earth,” (Ed.) M. Sideris, 133: 817-824.

 

Recent non-refereed publications (2009-present)

  • Collins, P., F. Lahaye, and S. Bisnath (2012).  “External ionospheric constraints for improved PPP-AR initialisation and a generalised local augmentation concept.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2012, 17-21 September, Nashville, Tennessee, The Institute of Navigation, pp. 3055-3065.
  • Seepersad, G. and S. Bisnath (2012).  “Reduction of Precise Point Positioning convergence period.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2012, 17-21 September, Nashville, Tennessee, The Institute of Navigation, pp. 3742-3752.
  • S. Bisnath, J.-G. Wang, Saeidi, A. and G. Seepersad (2012).  “Utilization of Network RTK GPS in MTO highway surveys.” Ministry of Transportation of Ontario Provincial Highways Management Division Report, Highway Infrastructure Innovation Funding Program, 62 p.
  • Collins, P., and S. Bisnath (2011).  “Issues in ambiguity resolution for Precise Point Positioning.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2010, 20-23 September, Portland, Oregon, The Institute of Navigation, pp. 679-687.
  • Saeidi, A., S. Bisnath, J.-G. Wang, and G. Seepersad (2011).  “On the use of network RTK to replace static relative positioning for geodetic GPS surveys.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2010, 20-23 September, Portland, Oregon, The Institute of Navigation, pp. 2310-2317.
  • Bisnath, S., A. Dolgansky, and A. Szeto (2010).  “Development of a multi-GNSS software simulator.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2010, 21-24 September, Portland, Oregon, The Institute of Navigation, pp. 892-899.
  • Mander, A and S. Bisnath, S. (2010).  “Constrained GPS precise orbit determination for Low Earth Orbiters.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2010, 21-24 September, Portland, Oregon, The Institute of Navigation, pp. 2789-2796.
  • Collins, P., J. Henton, Y. Mireault, P. Heroux, M. Schimdt, H. Dragert, and S. Bisnath (2009).  “Precise Point Positioning for real-time determination of co-seismic crustal motion.” Proceedings of The Institute of Navigation International Technical Meeting ION GNSS 2009, 22-25 September, Savannah, Georgia, The Institute of Navigation, pp. 2479 – 2488.
  • Bisnath, S. and Y. Gao (2009).  “Precise Point Positioning: A powerful technique with a promising future.”  GPS World, Vol. 20, No. 4, pp. 42-49.