Dr. Brent M. Ledvina

See my Linux-based GPS receiver work website

my c.v.

Journal Articles

B.M. Ledvina, M. L. Psiaki, P.M. Kintner, and Eurico R. de Paula, Ionospheric Scattering Altitude Estimation Using Closely-Spaced GPS Receivers, Radio Sci., In Review.

B.M. Ledvina and J.J. Makela, First Observations of GPS SBAS/WAAS Scintillations: Using Colocated Scintillation Measurements and All-sky Images to Study Equatorial Plasma Bubbles, Geophys. Res. Lett., In Review.

P.M. Kintner, B.M. Ledvina, and E.R. de Paula, An Amplitude Scintillation Test Pattern Standard for Evaluating GPS Receiver Performance, Space Weather, In Review.

P.M. Kintner and B.M. Ledvina, The Ionosphere, Radio Navigation, and Global Navigation Satellite Systems, Advances in Space Research, In Review.

B.M. Ledvina, P.M. Kintner, and E.R. de Paula, Understanding Spaced-Receiver ZonalVelocity Estimation, J. Geophys. Res., 109(A10), doi:10.1029/2004JA010489,October 2004.

B.M. Ledvina, M.L. Psiaki, S.P. Powell, and P.M. Kintner, Bit-Wise Parallel Algorithms for Efficient Software Correlation Applied to a GPS Software Receiver, IEEE Transactions on Wireless Communications, 3(5), September 2004.

J.J. Makela, B.M. Ledvina, M.C. Kelley, and P.M. Kintner, Analysis of the Seasonal Variations of Equatorial Plasma Bubble Occurrence Observed from Haleakala, Hawaii, Annales Geophysicae, 22(9), August 2004.

P.M. Kinter, B.M. Ledvina, E.R. de Paula, and I.J. Kantor, The Size, Shape, Orientation, Speed, and Duration of GPS Equatorial Anomaly Scintillations, Radio Science, 39(2), doi:10.1029/2003RS002878, April 2004.

B.M. Ledvina, J.J. Makela, and P.M. Kintner, Temporal Scales of the GPS L1 Amplitude Scintillations at Midlatitude, Radio Science, 39(1), doi:10.1029/2002RS002832, February 2004.

E.R. de Paula, F.S. Rodrigues, K.N. Iyer, I.J. Kantor, M.A. Abdu, P.M. Kintner, B.M. Ledvina, and H. Kil, Equatorial Anomaly Effects on GPS Scintillations in Brazil, Advances in Space Research, 31(3), February 2003.

M.C. Kelley, J.J. Makela, B.M. Ledvina, and P.M. Kintner, Observations of Equatorial Spread-F from Haleakala, Hawaii, Geophys. Res. Lett., 29(20), doi:10.1029/2002GL015509, October 2002.

B.M. Ledvina, J.J. Makela, and P.M. Kintner, First Observations of Intense GPS L1 Amplitude Scintillations at Midlatitude, Geophys. Res. Lett., 29, doi:10.1029/2002GL014770, July 2002.

Recent Conference Presentations

B.M. Ledvina, P.M. Kintner, C.N. Mitchell, and E.R. de Paula, Temporal and Spatial Evolution of GPS L1 Amplitude Scintillations and Electron Density in Brazil, Proc. of the Beacon Satellite Symposium, October 18--22, 2004, Trieste, Italy.

L.F.C. de Rezende, E.R. de Paula, I.J. Kantor, P. M. Kintner, B. M. Ledvina, and O. J. Branquinho, Study of Lock Loss Duration and Amplitude Fading Statistics on GPS L1 Signal During Ionospheric Scintillation, Proc. of the Beacon Satellite Symposium, October 18--22, 2004, Trieste, Italy.

I.J. Kantor, E.R. de Paula, E.A. Kherani, L.F.C. de Rezende, N. Reggiani, M. S. Canabarro, P.M. Kintner, and B.M. Ledvina, Magnetic Storm Effects Over GPS L1 Band Amplitude Scintillations, Proc. of the Beacon Satellite Symposium, October 18--22, 2004, Trieste, Italy.

B.M. Ledvina, M.L. Psiaki, D.J. Sheinfeld, A.P. Cerruti, S.P. Powell, and P.M. Kintner, A Real-Time GPS Civilian L1/L2 Software Receiver, Proc. of the Institute of Navigation GNSS, September 21--24, 2004, Long Beach, CA. ( PDF)

T.E. Humphreys, B.M. Ledvina, M.L. Psiaki, A.P. Cerruti, and P.M. Kintner, Analysis of Ionospheric Scintillations using Wideband GPS L1 C/A Signal Data, Proc. of the Institute of Navigation GNSS}, September 21--24, 2004, Long Beach, CA.

B.M. Ledvina, A.P. Cerutti, M.L. Psiaki, S.P. Powell, and P.M. Kintner, Performance Tests of a Real-Time 12-Channel GPS L1 Software Receiver, Proc. of the ION GPS, September 10-12, 2003, Portland, OR.

B.M. Ledvina and P.M. Kintner, GPS Scintillations and Stations in North and South America, CEDAR, June 2003, Longmount, CO.

B.M. Ledvina, M.L. Psiaki, S.P. Powell, and P.M. Kintner, A 12-Channel Real-Time GPS L1 Software Receiver, Proc. of the Institute of Navigation National Technical Meeting , January 22-24, 2003. Anaheim, CA. ( PDF)

B.M. Ledvina, J.J. Makela, and P.M. Kintner, On the first observations of intense GPS L1 amplitude scintillations at midlatitude, Ionospheric Effects Symposium (IES), May 6-9, 2002, Alexandria, VA.

B.M. Ledvina, P.M. Kintner, R.V.E. Lovelace, and E.M. Klatt, GPS Phase Scintillations, U.R.S.I. International Beacon Satellite Symposium, June 4-8, 2001, Boston, MA.

B.M. Ledvina, F. Mota, and P.M. Kintner, A Coming of Age for GPS: A RTLinux GPS Receiver, Proc. of the Workshop on Real Time Operating Systems and Applications and Second Real Time Linux Workshop (in conjunction with IEEE RTSS 2000), November 27-28, 2000. Orlando, FL. ( PostScript)