GNSS Receivers and Signal Processing

1. 1. Breitsch, B., Y. Morton, “Improved detrending of GNSS phase observables under harsh scintillation and multipath conditions,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   2. Yang, R., Y. Morton, “Hybrid carrier tracking and position determination using low elevation satellite signals,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   3. Wang, Y., Y. Morton, R. Yang, F. van Graas, J. Hasse, “Robust closed-loop tracking of airbourne low-elevation GPS radio-occultation signals,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   4. Xu, D., Y. Morton, Y. Jiao, R. Yang, “Implementation and performance evaluation of a vector-based receiver during strong equatorial scintillation on dynamic platforms,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   5. Xu, D., Y. Morton, Y. Jiao, R. Yang, “Implementation and performance evaluation of a vector-based receiver during strong equatorial scintillation on dynamic platforms,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   6. Liu, Y., Y. Morton, Y. Jiao, “Application of machine learning to the characterization of GPS L1 ionospheric amplitude scintillation,” Proc. IEEE/ION PLANS, Monterey, CA, April 2018.

   7. Xu, D., Y. Morton, Y. Jiao, C. Rino, “Simulation and tracking algorithm evaluation for scintillation signals on LEO satellites traveling inside the ionosphere,” Proc. IEEE/ION PLANS, Monterey, CA, April 2018.

   8. Yang, R., D. Xu, Y. Morton, “An improve adaptive multi-frequency GPS carrier tracking algorithm for navigation in challenging environments,” Proc. IEEE/ION PLANS, Monterey, CA, April 2018.

   9. Myer, G., Y. Morton, "Ionosphere scintillation effects on GPS measurements, a new carrier-smoothing technique, and positioning algorithms to improve accuracy," Proc. of ION ITM, Reston, VA, Jan. 2018.

   10. Yang, R., Y. Morton, "An adaptive inter-frequency aiding carrier tracking algorithm for mountain-top GPS radio occultation signal," Proc. ION ITM, Reston, VA, Jan. 2018.

   11. Yang, Z., Y. Morton, Z. Liu, “Post-processing analysis of ionospheric scintillation effects on RTK GPS positioning at low-latitude region,” Proc. Int. Sym. GNSS, Hong Kong, Dec. 2017. (Best student paper award)

   12. Xu, D., Y. Morton, Y. Jiao, C. Rino, “Robust GPS carrier tracking algorithms during strong equatorial scintillation for dynamic platforms,” Proc. ION GNSS+, 4112-4121, Portland, OR, Sept. 2017.

   13. Yang, R., Y. Morton, B. Han, “An adaptive carrier tracking algorithm for low latitude mountain-based GPS radio occultation measurement,” Proc. ION GNSS+, Portland, OR, Sept. 2017.

   14. Breitsch, B., Y. Morton, C. Rino, “Long-term analysis of carrier phase residual variations using geometry-ionosphere-free combination of triple-frequency GPS observations,” Proc. ION GNSS+, Portland, OR, Sept. 2017. (Best Paper Award)

   15. Morton, Y., H. Bourne,S. Taylor, D. Xu, R. Yang, F. van Graas, N. Pujara, “Mountain-top radiooccultation with multi-GNSS signals: experiment and preliminary results,” Proc. Pacific PNT, Honolulu, HI, May 2017.

   16. Morton, Y., D. Xu, H. Bourne, B. Breitsch, F. van Graas, N. Pujara, “Ionospheric scintillation observations in Singapore using a high gain antenna and SDR,” Proc. Pacific PNT, Honolulu, HI, May 2017.

   17. Breitsch, B., Y. Morton, “Joint estimation of ionosphere TEC, receiver inter-frequency biases, and carrier ambiguities using 3-frequency GPS measurements,” URSI National Meeting, Boulder, CO, Jan. 2017.

   18. Myer, G., Y. Morton, B. Schipper, “Ionospheric scintillation effects on GPS pseudorange and carrier phase measurements and an adaptive algorithm to limit position errors during scintillation,” Proc. ION ITM, Monterey, CA, Jan. 2017.

   19. Jiao, Y., J. Hall, Y. Morton, “Performance evaluations of an equatorial GPS amplitude scintillation detector using a machine learning algorithm,” Proc. ION GNSS+, Portland, OR, Sept. 2016. (Best Paper Award)

   20. Xu, D., Y. Morton, “Beidou signal parameters characterization during strong equatorial ionospheric scintillation,” Proc. ION GNSS+, Portland, OR, Sept. 2016. (Invited)

   21. Xu, D., Y. Morton, D. Akos, T. Walter, “GPS multi-frequency carrier phase characterization during strong equatorial ionospheric scintillation,” Proc. ION GNSS+, Tampa, FL, Sept. 2015. (Best presentation award)

   22. Xu, D., Y. Morton, “GPS carrier parameters characterization during strong equatorial ionospheric scintillation,” Proc. ION ITM, Dana Point, CA, Jan. 2015.

   23. Yin, H., Y. Morton, M. Carroll, E. Vinande, “Implementation and Performance Analysis of A Multi-Frequency GPS Signal Tracking Algorithm,” Proc. ION GNSS+, Tempa, FL, Sept. 2014. (Best Presentation Award)

   24. Carroll, M., Y. Morton, E. Vinande, “Triple frequency GPS signal tracking during strong ionospheric scintillations over Ascension Island,” Proc. IEEE/ION PLANS meeting, Monterey, CA, May 2014.

   25. Han, B., G. Erry, K. Low, Y. Morton, “Simulation study of the effect of orbital errors on open loop tracking in GPS radio occultation,” Proc. IEEE/ION PLANS meeting, Monterey, CA, May 2014.

   26. Kassabian, N., Y. Morton, “Extending integration time for Galileo tracking robustness under ionosphere scintillation,” Proc. IEEE/ION PLANS meeting, Monterey, CA, May 2014.

   27. Hang, Y., Y. Morton, M. Carroll, E. Vinande, “GPS CNAV signal decoding and performance comparison with legacy navigation messages,” Proc. ION ITM, San Diego, CA, Jan. 2014.

   28. Xu, D., Y. Morton, S. Taylor, “Algorithms and results of tracking Beidou signals during strong ionospheric scintillation over Ascension Island,” Proc. ION ITM, San Diego, CA, Jan. 2014.

   29. Kassabian, N., Y. Morton, “Galileo tracking performance under ionosphere scintillation,” 4^th Int. Colloquium Sci. Fundamental Aspects Galileo Prog., Oct. 2013. (Best paper)

   30. Mao, X., Y. Morton, “GNSS receiver carrier tracking loop designs for robust navigation application and for ionosphere studies,” Proc. ION GNSS+, Nashville, TN., Sept. 2013.

   31. Taylor, S., Y. Morton, R. Marcus, H. Bourne, W. Pelgrum, A.J. Van Dierendonck, “Ionospheric scintillation receivers performances based on high latitude experiments,” Proc. ION Pacific PNT, Honolulu, HI, Apr. 2013.

   32. Vinande, E., N. Pujara, Y. Morton, R. Marcus, F. van Graas, W. Pelgrum, “International collaborative navigation research,”Proc. ION Pacific PNT, Honolulu, HI, Apr. 2013.

   33. Di, R., Y. Morton, E. Vinande, “Performance analysis of a USRP based GPS and GLONASS signal recording and playback system,” Proc. ION ITM, San Diego, CA, Jan. 2013.

   34. Peng, S., Y. Morton, R. Di, “A multiple-frequency GPS software receiver design based on a vector tracking loop,” Proc. IEEE PLANS, 495-505, Myrtle Beach, SC, April 2012.

   35. Di, R., Y. Morton, S. Peng, “A USRP-based GNSS and interference signal generator and playback system,” Proc. IEEE PLANS, Myrtle Beach, SC, April 2012.

   36. Taylor, S., Y. Morton, Y. Jiao, J. Triplett, W. Pelgrum, “An improved ionosphere scintillation event detection and automatic trigger for a GNSS data collection system,” Proc. ION ITM, p1563-1569, Newport Beach, CA, Feb. 2012.

   37. Zhang, L., Y. Morton, “GPS carrier phase and carrier phase spectrum estimation for ionosphere scintillation studies,” Proc. ION GNSS, p608-616, Portland, OR, Sept. 2011.

   38. Pelgrum, W., Y. Morton, F. van Graas, P. Vikram, S. Peng, “Multi-domain analysis of the impact on natural and man-made ionosphere scintillations on GNSS signal propagation,” Proc. ION GNSS, 617-625, Portland, OR, Sept. 2011. (Best presentation)

   39. Vikram, P., Y. Morton, W. Pelgrum, “Event driven data collection system for studying ionosphere scintillation,” Proc. ION GNSS, 3903-3909, Portland, OR, Sept. 2011.

   40. Wang, J., J. Morell, Y. Morton, “Predicting GLONASS satellite orbit based on an almanac conversion algorithm for controlled ionosphere scintillation experiment planning,” Proc. ION GNSS, 3118-3124, Portland, OR, Sept. 2011.

   41. Kou, Y., Y. Jiao, Y. Morton, “A unique software GPS receiver and simulator platform for clock error measurement and simulation,” Proc. ION GNSS, 2923-2930, Portland, OR, Jan. 2011.

   42. Peng, S., Y. Morton, “A USRP2-Based multi-constellation and multi-frequency GNSS software receiver for ionosphere scintillation studies,” Proc. ION ITM, 1033-1042, San Diego, Jan. 2011.

   43. Pelgrum, W., Y. Morton, F. van Graas, S. Gunawardena1, M. Bakich, D.Charney,S.Peng,J. Triplett, A.Vermuru, P.Vikram, “Measurement and analysis of artificially-generated and natural ionosphere scintillations effects on GNSS signals,” Proc. ION ITM, 950-958, San Diego, Jan. 2011.

   44. Brenneman, M., Y. Morton, “An efficient algorithm for short delay time multipath estimation and mitigation,” Proc. ION GNSS, 152-160, Portland, OR, Sept. 2010.

   45. Zhang, L., Y. Morton, “A variable gain adaptive Kalman filter-based carrier tracking algorithm for tracking under ionosphere scintillation,” Proc. ION GNSS, 3107-3114, Portland, OR, Sept. 2010.

   46. Mao, X., Y. Morton, L. Zhang, Y. Kou, “GPS signal carrier parameters estimation using PLL with dynamic reductions,” Proc. ION GNSS, 3277-3283, Portland, OR, Sept. 2010.

   47. Zhang, L., Y. Morton, Q. Zhou, F. van Graas, and T. Beach, “Characterization of GNSS signal parameters under ionosphere scintillation conditions using sequential and batch-based tracking algorithms,” Proc. IEEE PLANS., 264-275, Palm Springs, CA, May 2010.

   48. Kou, Y., X. Zhou, Y. Morton, D. Akos, “A software-based receiver sampling frequency calibration technique and its application in GPS signal quality monitoring,” Proc. IEEE PLANS, 728-727, Palm Springs, CA, May 2010.

   49. Kou, Y., X. Zhou, Y. Morton, L. Zhang, “Processing L2C signals under ionospheric scintillations,” Proc. IEEE PLANS, 771-782, Palm Springs, CA, May 2010.

   50. Brenneman, M., Y. Morton, “A novel maximum likelihood estimator for GPS signal angle of arrival,” Proc. Asilomar Conf. Sig., Sys., & Comp., 1154-1158, Pacific Grove, CA., Nov. 2009.

   51. Zhang, L., Y. Morton, “Tracking GPS signals under ionosphere scintillation conditions,” Proc. ION GNSS, 227-234, Savanna, GA, Sept. 2009.

   52. Yang, C., Y. Morton, “Adaptive replica code synthesis for interference suppression in GNSS receivers,” Proc. ION ITM, 131-138, Los Angeles, CA, Jan. 2009.

   53. Brenneman, M., Y. Morton, Q. Zhou, “Applying ANOVA test to GPS multipath detection using a multi-channel software receiver,” Proc. IEEE PLANS/ION, 1316-1323, Monterey, CA, May, 2008.

   54. Brenneman, M., Y. Morton, C. Yang, F. van Grass, “Mitigation of GPS multipath using polarization and spatial diversities,” Proc. ION GNSS, 1221-1229, Fort Worth, TX, Sept. 2007. (Best presentation)

   55. Brenneman, M., Y. Morton, Q. Zhou, and G. Distler, “GPS interference source angle of arrival determination using adaptive periodogram techniques,” Proc. ION ITM, 389-404, San Diego, CA, Jan., 2007.

   56. Morton, Y., L. Liou, D. Lin, J. Tsui, Q. Zhou, “Broadband interference cancellation using digital beam forming and a software receiver,” Proc. ION GNSS, 1276-1284, Long Beach, CA, Sep. 2005.

   57. Liou, L., D. Lin, J. Tsui, J. Schamus, Y. Morton, “Baseline vector measurement using a two-channel software GPS receiver,” Proc. ION GNSS, 536-542, Long Beach, CA, Sep. 2005.

   58. Liou, L., D. Lin, J. Tsui, J. Schamus, Y. Morton, “GPS time tag using software GPS receiver approach,” Proc. ION GNSS, 1116-1125, Long Beach, CA, Sep. 2005.

   59. Liou, L., D. Lin, J. Tsui, J. Schamus, Y. Morton, “Frequency calibration of A/D converter in software GPS receivers,” Proc. 2005 IEEE Int. Frequency Control Sym. & Exposition, 652-659, Vancouver, Canada, Aug. 2005.

   60. Morton, Y., L. Liou, D. Lin, J. Tsui, Q. Zhou “Interference cancellation using power minimization and self-coherence properties of GPS signals,” Proc. ION GNSS, 132-143, Long Beach, CA, Sep. 2004. (Best presentation)

   61. Morton, Y., M. French, Q. Zhou, J. Tsui, D. Lin, M. Miller, D. Jennings, “A software approach to access ultra-wide band interference on GPS receivers,” Proc. IEEE PLANS, 551-557, Monterey, CA, Apr. 2004.

   62. Morton, Y., J. Tsui, D. Lin, M. Miller, J. Schamus, Q. Zhou, M. French, “Assessment and handling of CA code self-interference during weak GPS signal acquisition,” Proc. ION GPS, 646-653, Portland, OR, Sep. 2003.

   63. Liou, L., J. Tsui, D. Lin, J. Schamus, F. van Graas, Y. Morton, “Passive altimeter study using GPS flight data,” Proc. ION GPS, 1264-1270, Portland, OR, Sep. 2003.

   64. Lin, D., J. Tsui, L. Liou, Y. Morton, "Sensitivity analysis of a stand alone GPS software GPS receiver and an acquisition method,” Proc. ION GPS, Portland, OR, Sep. 2002.

Remote Sensing

1. 1. Liu, Y., I. Collett, Y. Morton, “A machine learning framework for real data GNSS-R wind speed retrieval,” Proc. 2019 IEEE Int. Geosci. Remote Sensing Sym., Yokohoma, Japan, July 2019.

   2. Wang, Y., Y. Morton, “Coherent reflections using closed-loop PLL processing of CYGNSS IF data,” Proc. 2019 IEEE Int. Geosci. Remote Sensing Sym., Yokohoma, Japan, July 2019.

   3. Morton, Y. H. Bourne, B. Breitsch, I. Collett, S. Taylor, “Mountaintop GNSS-RO and GNSS-R experiment: new results and insights,” Proc. ION Pacific PNT, Honolulu, HI, April 2019.

   4. Bourne, H., Y. Morton, “Discrepancies Between Provided DCB Estimates and Equivalent Formulations in CAS DCB Product,” Proc. ION Pacific PNT, Honolulu, HI, April 2019.

   5. Collett, I., Y. Morton, B. Breitsch, “Characterization and mitigation of interference between GNSS radio occultation and reflectometry signals for low altitude occultation,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   6. Liu, Y., I. Collett,, Y. Morton, “Application of machine learning to GNSS-R wind speed retrieval, Proc. ION GNSS+, Miami, FL, Sept. 2018.

   7. Wang, J., Y. Morton, “A hybrid correlation method from the anisotropy model and the front velocity model for ionospheric irregularity drift velocity estimation using GNSS spaced-receiver array,” Proc. ION GNSS+, Miami, FL, Sept. 2018.

   8. Collett, I., Y. Morton, “Simulation study of the common surface scenario in GNSS-reflectometry,” Proc. IGARSS, Italy, July 2017.

   9. Collett, I., Y. Morton, “Simulation study of the common surface scenario in GNSS-reflectometry,” Proc. IGARSS, Italy, July 2017.

   10. Liu, Y., I. Collett, Y. Morton, S. Hrbek, D. Akos, “Mountaintop ocean reflectometry with dual frequency GPS signals: experiment and preliminary results,” Proc. IGARSS, Italy, July 2017.

   11. Mahmoudian, A., J. Morton, B. Isham, W. A. Scales, P. A. Bernhardt, E. Nossa, S. J. Briczinski, D. Papadopoulos, G. Milikh, “Recent observations and modeling of ionospheric stimulated electromagnetic emissions,” Proc. URSI AT RASC, Gran Canaria, May 2018.

   12. Breitsch, B., Y. Morton “Study of the effects of ionosphere scintillation-induced deep fades on multi-frequency GNSS carrier phase,” Proc. IEEE/ION PLANS, Monterey, CA, April 2018.

   13. Rino, C., B. Breitsch, Y. Morton, Y. Jiao, D. Xu C. Carrano, “A new GNSS scintillation model,” Proc. URSI National Meeting, Boulder, CO, Jan. 2018.

   14. Jiao, Y, C. Rino, Y. Morton, “Scintillation simulation on equatorial GPS signals for dynamic platforms,” Proc. ION GNSS+, 1644-1657, Portland, OR, Sept. 2017.

   15. Wang, J., Y. Morton, Robinson, R., “Spaced multi-GNSS receiver array as ionosphere radar for irregularity drift velocity estimation during high latitude ionospheric scintillation,” Proc. ION GNSS+, 3389-3401, Portland, OR, Sept. 2017.

   16. Rino, C., B. Breitsch, Y. Jiao, D. Xu, Y. Morton, C. Carrano, “A new GNSS scintillation model,” Proc. ION GNSS+, 3879-3887, Portland, OR, Sept. 2017. (Best Paper Award)

   17. Collett, I., B. Breitsch, D. Xu, Y. Morton, “Statistical characterization of GNSS signal carrier Doppler frequency deviations during ionospheric scintillation,” Int. Iono. Effects Sym., online https://ies2017.bc.edu/wp-content/uploads/2017/05/5A2-Collett-paper.pdf, May 2017.

   18. Rino, C., C. Carrano, Y. Jiao, B. Breitsch, J. Morton, “Simulation study of GPS phase scintillation,” Int. Iono. Effects Sym., online https://ies2017.bc.edu/wp-content/uploads/2017/05/4A3-Rino-GPSPhaseSimulationStudy-paper.pdf, May 2017.

   19. Wang, J., Y. Morton, “A comparative study of time-domain and joint time-frequency-domain methods for ionospheric irregularity drift velocity estimation from a GNSS receiver array during high latitude ionospheric scintillation,” Int. Iono. Effects Sym., online https://ies2017.bc.edu/wp-content/uploads/2017/05/10B6-Wang-paper_v3.pdf, May 2017.

   20. Rino, C., J. Jiao, J. Morton, “Modeling scintillation for GPS and RO geometries,” Int. Sym. GNSS, Dec. 2016.

   21. Jiao, Y., D. Xu, Y. Morton, C. Rino, “Equatorial amplitude scintillation spectrum analysis and fading characteristics on GPS signals,” Proc. ION GNSS+, Sept. 2016.

   22. Rino, C., C. Carrano, Y. Morton, Y. Jiao, J. Wang, and D. Xu, “On the geometric dependence of scintillation and stochastic structure models,” Proc. Beacon Satellite Sym., June 2016.

   23. Bourne, H., Y. Morton, F. van Graas, M. Sulzer, M. Milla, “Gradient-based TEC estimation with code noise multipath correction evaluation using simultaneous incoherent scatter radar measurements,” Proc. ION ITM, Monterey, CA, Jan. 2016.

   24. Wang, J., Y. Morton, J. Spaleta, W. Bristow, “A comparative study of ionospheric irregularity drift velocity using a GNSS receiver array and SuperDARN at high latitude,” Proc. ION ITM, Monterey, CA, Jan. 2016.

   25. Breitsch, B., J. Morton, “Distribution of common-volume LEO-based and ground-based GNSS ionosphere observations,” Proc. URSI Radio Science Meeting, Boulder, CO, Jan. 2016.

   26. Jiao, Y., Y. Morton, “A comparative study of triple frequency GPS scintillation signal amplitude fading characteristics at low latitudes,” Proc. ION GNSS+, Tampa, FL, Sept. 2015.

   27. Wang, J., Y. Morton, “Spaced receiver array for ionospheric irregularity drift velocity estimation using multi-band GNSS signals,” Proc. ION GNSS+, Tampa, FL, Sept. 2015.

   28. Morton, Y., Y. Jiao, and S. Taylor, “High-latitude and equatorial ionospheric scintillation based on an event-driven multi-GNSS data collection system,” Proc. Ionospheric Effects Sym., Alexandria, VA, May 2015.

   29. Morton, Y., Y. Jiao, F. van Graas, E. Vinande, N. Pujara, “Analysis of receiver multi-frequency response to ionospheric scintillation in Ascension Island, Hong Kong, and Singapore,” Proc. ION Pacific PNT, Honolulu, HI, April 2015.

   30. Bourne, H., Y. Morton, T. Nguyen, M. Sulzer, M. Milla, “GPS Based TEC estimation algorithm evaluation using simultaneous incoherent scatter radar measurements,” Proc. ION Pacific PNT, Honolulu, HI, April 2015.

   31. Liu, Z.. Z. Yang, W. Chen, J. Morton, X. Dingm M. Aquino, A. Dodson, “A comparative analysis of GPS ionospheric scintillations observed in Northern and Southern equatorial anomaly regions in 2013-2014,” Proc. ION Pacific PNT, Honolulu, HI, April 2015.

   32. Xu, D., Y. Morton, “GPS signal fading and carrier phase variations revealed by vector processing,” Proc. ION ITM, Dana Point, CA, Jan. 2015.

   33. Wang, J., Y. Morton, J. Spaleta, B. Bristow, “Spatial characterization of high latitude ionospheric scintillation using an array of software receiver measurements,” Proc. ION GNSS+, Tempa, FL, Sept. 2014.

   34. Jiao, Y., Y. Morton, S. Taylor, M. Carroll, “Characteristics of low-latitude signal fading across the GPS frequency bands,” Proc. ION GNSS+, Tempa, FL, Sept. 2014.

   35. Morton, Y., H. Bourne, M. Carroll, Y. Jiao, N. Kassabian, S. Taylor, J. Wang, D. Xu, H. Yin, “Multi-constellation GNSS observations of equatorial ionospheric scintillation,” Proc. URSI General Assembly & Sci. Sym., Beijing, China, August, 2014.

   36. Wang, C., J. Wang, Y. Morton, “Regional ionospheric TEC gradients estimation using a single GNSS receiver,” Proc. Chinese Satellite Navigation Conference, Nanjing, China, May 2014.

   37. Jiao, Y., Y. Morton, S. Taylor, “Comparative studies of high-latitude and equatorial ionospheric scintillation,” Proc. IEEE/ION PLANS meeting, Monterey, CA, May 2014.

   38. Wang. C., Y. Morton, “Estimation of total electron content gradient using a regional GNSS network,” Proc. ION GNSS+, Nashville, TN, Sept. 2013.

   39. Jiao, Y., Y. Morton, S. Taylor, W. Pelgrum, “Correlation between ionosphere scintillation and geomagnetic field activities,” Proc. ION GNSS+, Nashville, TN., Sept. 2013.

   40. Wang, J., Y. Morton, Q. Zhou, W. Pelgrum, “Quantitative spectrum analysis of high latitude and equatorial ionosphere scintillation,” Proc. ION GNSS+, Nashville, TN., Sept. 2013.

   41. Bourne, H., Y. Morton, “GPS receiver ionosphere error correction based on spatial gradients and IGS satellite DCBs,” Proc. ION Pacific PNT, Honolulu, HI, Apr. 2013.

   42. Wang, J., Y. Morton, Q. Zhou, W. Pelgrum, “High latitude and equatorial ionosphere scintillation spectrum analysis,” Proc. ION Pacific PNT, Honolulu, HI, Apr. 2013.

   43. Liu, Z., R. Xu, Y. Morton, J. Xu, W. Pelgrum, S. Taylor, W. Chen, X. Ding, “A comparison of GNSS-based ionospheric scintillation observations in north and south Hong Kong,” Proc. ION Pacific PNT, Honolulu, HI, Apr. 2013.

   44. Park, J., J. Helmboldt, D.Grejner-Brzezinska, R. von Frese, J. Morton, T. Wilson, "On detecting underground nuclear explosions with GNSS and radio astronomical observations," Proc. ION Pacific PNT, 52-61, Honolulu, Hawaii, Apr. 2013.

   45. Jiao, Y., Y. Morton, S. Taylor, W. Pelgrum, “High latitude ionosphere scintillation characterization,” Proc. ION ITM, San Diego, CA, Jan. 2013.

   46. Niu, F., Y. Morton, W. Pelgrum, A. J. Van Dierendonck, “Performances of GPS signal observables detrending methods for ionosphere scintillation studies,” Proc. ION GNSS, 3435-3443, Nashville, TN, Sept. 2012.

   47. Peng,S., Y. Morton, W. Pelgrum, “Ionosphere scintillation signal parameter modeling based on triple frequency software GNSS receiver measurements,” Proc. ION GNSS, 3413-3419, Nashville, TN, Sept. 2012.

   48. Park, J., D. Grejner-Brzezinska, R. von Freese, Y. Morton, “Discriminating underground nuclear explosions and earthquakes in GPS-detected traveling ionosphere disturbances: case study,” Proc. ION GNSS, Nashville, TN, Sept. 2012.

   49. Wang, J., Y. Morton, Q. Zhou, W. Pelgrum, “Spatial characterization of high latitude ionosphere scintillations,” Proc. ION GNSS, 3459-3464, Nashville, TN, Sept. 2012.

   50. Wang,J., Y.Morton, Q.Zhou, F. van Graas, W. Pelgrum, “Time-frequency analysis of ionosphere scintillation observed by a GNSS receiver array,” Proc. IEEE PLANS, 274-281, Myrtle Beach, SC, Apr. 2012. (Best track paper)

   51. Park, J., D. Grejner-Brezezinska, R. von Frese, Y. Morton, L. Gaya-Pique, “On using traveling ionospheric disturbances to detect underground nuclear tests,” Proc. ION ITM, 1581-1589, Newport Beach, CA, Feb. 2012.

   52. Niu, F., Y. Morton, J. Wang, W. Pelgrum, “GPS carrier phase detrending methods and performances for ionosphere scintillation studies,” Proc. ION ITM, 1462-1467, Newport Beach, CA, Feb. 2012.

   53. Peng, S., Y. Morton, W. Pelgrum, F. van Graas, “High latitude ionosphere scintillations at L5 band,” Proc. ION GNSS, 597-607, Portland, OR, Sept. 2011.

   54. Morton, Y., R. Moore, F. van Graas, “GPS signal propagation mode impact on receiver position errors,” Proc. ION ITM, 426-432, San Diego, CA, Jan. 2010.

   55. Matteo, N., Y. Morton, P. Chandrasekaran, F. van Graas, “Geographical dependency of higher order ionosphere errors,” Proc. ION GNSS, 2738-2750, Savanna, GA, Sept. 2009.

   56. Morton, Y., F. van Graas, Q. Zhou, J. Herdtner, “Assessment of the second order ionosphere error on position solutions,” Proc. ION GNSS, 2739-2750, Savanna, GA, Sept. 2008.

   57. Morton, Y., Q. Zhou, F. van Graas, “Analysis of second order ionosphere error using incoherent scatter radar measurements,” Proc. Int. Ionosphere Effect Sym., Washington DC, May, 2008.

   58. Morton, Y., Q. Zhou, M. Cosgrove, “Ionosphere delay correction for single frequency GPS receivers,” Proc. ION Annual Meeting, 479-484, Boston, MA, Apr. 2007.

   59. Mantz, C. P., Q. Zhou, Y. Morton, “Application of a neural network model to GPS ionosphere error correction,” Proc. IEEE PLANS, 538-542, Monterey, CA, Apr. 2004.

   60. Martin, J., Y. Morton, Q. Zhou, "Neural network development for the forecasting of upper atmosphere parameters distributions,” Proc. 34th COSPAR Sci. Ass., Houston, TX, Oct. 2002.

   61. Mathews, J., Y. Morton, “Radar measurements of dynamics and layering processes in the 80-150 km region at Arecibo,” 1992 COSPAR Proceedings.

   62. Mathews, J., Q. Zhou, Y. Morton, C. Gardner, and T. Beatty, “Simultaneous observation of narrow sodium and narrow ionization layers using both Lidar and Incoherent Scatter Radar techniques at Arecibo during AIDA,” Int. Sym. Mid. Atm. Studies, Dushanbe, Tadzhikistan, USSR, Nov. 1989.

   63. Mathews, J., Y. Morton, Q. Zhou, “Tides and acoustic-gravity waves as observed in the motions of ionospheric E-region meteoric ion layers,” Int. Sym. Mid. Atm. Studies, Dushanbe, Tadzhikistan, USSR, Nov., 1989.

   64. Getman, V., J. Mathews, Y. Morton, Q. Zhou, R. Roper, “Observations of long-lived meteor trails at Arecibo using optical and radar techniques,” Int. Sym. Mid. Atm. Studies, Dushanbe, Tadzhikistan, USSR, Nov. 1989.

Sensors, Sensor Integration, and Other

1. 1. Baucher, B., I. Qualls, D. Garmatyuk, Y. Morton, S. Mudaliar, “Experimental radar-enabled navigation with UWB system in indoor environments,” Int. Radar Sym., 2017.

   2. Kellett, D., D. Garmatyuk, Y. Morton, S. Mudaliar, “Radar Communications via Random Sequence Encoding,” Int. Radar Sym., 2017.

   3. Liu, Y.,, G. Y. Liang, D. Garmatyuk, Y. Morton, “USRP based OFDM radar systems for doorway detection,” Proc. IEEE RadarCom, 2014.

   4. Marcus, R., J. Morton, R. Cole, Y. Morton, “Redblade: An Autonomous Snowplow,” Proc. ION GNSS+, Tempa, FL, Sept. 2014.

   5. Kauffman, K., J. Raquet, Y. Morton, D. Garmatyuk, “Experimental study of two-channel UWB-OFDM radar for indoor navigation with INS integration,” Proc. ION GNSS+, Nashville, TN, Sept. 2013.

   6. Jameson, B., D. Garmatyuk, Y. Morton, “Reconnaissance using adaptive multi-carrier radar with experimentally identified disturbance statistics,” Proc. IEEE RadarCon, Ottowa, Canada, May 2013.

   7. Jameson, B., D. Garmatyuk, Y. Morton, K. Kauffman, R. Ewing, “Adaptive SAR imaging of indoor environments using software-defined UWB OFDM sensor,” Proc. IEEE RadarCon, Ottowa, Canada, May 2013.

   8. Kauffman, K., J. Raquet, Y. Morton, D. Garmatyuk, “Experimental study of UWB-OFDM SAR for indoor navigation with INS integration,” Proc. ION GNSS, 3847-3852, Nashville, TN, Sept. 2012.

   9. Jameson, B., D. Garmatyuk, Y. Morton, “Cognitive radar for indoor positioning with a software-defined UWB OFDM radar,” Proc. IEEE RadarCon, Atlanta, GA, May 2012.

   10. Jameson, B., D. Garmatyuk, Y. Morton, A. Curtis, “Target scene reconstruction in indoor environment with cognitive OFDM radar,” Proc. Int. Waveform Diversity & Design Conf., Kauai, HI, Jan. 2012. (Second place student paper competition)

   11. Wolfarth, R., S. Taylor, A. Wibowo, B. Williams, Y. Morton, P. Jamieson, “Redblade: Miami University's multi-functional autonomous robot,” Proc. ION GNSS, 304-313, Portland, OR, Sept. 2011.

   12. Curtis, A., D. Garmatyuk, Y. Morton, R. Ewing, “Improved target detection through OFDM radar signal’s frequency analysis,” NAECOM, Dayton, OH, July 2011.

   13. Kauffman, K., J. Raquet, Y. Morton, D. Garmatyuk, “Enhanced feature detection and tracking algorithm for UWB-OFDM SAR navigation,” NAECOM, Dayton, OH, July 2011.

   14. Jameson, B., A. Curtis, D. Garmatyuk, Y. Morton, P. Plummber, K. Thompson, “Detection of behind-the-wall targets with adaptive UWB OFDM radar: experimental approach,” Proc. IEEE RadarCon, Kansas City, KS, May 2011.

   15. Kauffman, K., J. Raquet, Y. Morton, D. Garmatyuk, “Simulation study of UWB-OFDM SAR for navigation with INS integration,” Proc. ION ITM, 184-191, San Diego, Jan. 2011.

   16. Kauffman, K., J. Raquet, Y. Morton, D. Garmatyuk, “Simulation study of UWB-OFDM SAR for navigation using an Extended Kalman Filter,” Proc. ION GNSS, 2443-2451, Portland, OR, Sept. 2010.

   17. Kauffman, K., Y. Morton, J. Raquet, D. Garmatyuk, “Simulation study of UWB-OFDM SAR for dead-reckoning navigation,” Proc. ION ITM, 153-160, San Diego, CA, Jan. 2010.

   18. Li, W., H. Wu, D. Ucci, Y. Morton, “A positioning system using Chinese digital TV signals under limited GPS signal observability conditions in urban environment,” Proc. ION ITM, 264-269, San Diego, CA, Jan. 2010.

   19. Kauffman, K., D. Garmatyuk, Y. Morton, “Efficient sparse target tracking algorithm for navigation with UWB-OFDM radar sensors,” Proc. NAECOM, 14-17, Dayton, OH, July, 2009.

   20. Zmuda, M., A. Elesev, Y. Morton, “Robot localization using RF and inertial sensors,” Proc. NAECOM, 343-348, Dayton, OH, July 2008.

   21. Garmatyuk, D., Y. Morton, X. Mao, “On coexistence of in-band UWB-OFDM and GPS signals: tracking performance analysis,” Proc. IEEE PLANS/ION, 196-202, Monterey, CA, May, 2008.

   22. Zhou, Q., M. Brennemann, Y. Morton, “Analysis of EEG data using an adaptive periodogram technique,” Proc. Int. Biomedical Eng. & Informatics, DOI:10.1109/BMEI.2008.80, 2, p353-357, China, May 2008.

   23. Green, K., A. Hill, Y. Morton, M. Miller, J. Campbell, “A real-time position, velocity, and physiological monitoring and tracking device for equestrian and race training,” Proc. ION GNSS, 1802-1806, Fort Worth, TX., Sept. 2007.

   24. Xu, H., L. Yang, Y. Morton, “Positioning and navigation with ultra-wideband signals,” Proc. ION GNSS, 1861-1866, Fort Worth, TX., Sept. 2007.

   25. Garmatyuk, D., J. Schuerger, Y. Morton, K. Binns, M. Durbin, and J. Kimani, “Feasibility study of a multi-carrier dual-use imaging radar and communication system,” Proc. European Radar Conf., DOI:10.1109/EURAD.2007.4404970, 194-197, Oct. 2007.

   26. Garmatyuc, D., Y. Morton, “On coexistence of in-band UWB-OFDM and GPS signals,” Proc. ION NTM, 378-385, San Diego, CA, Jan., 2007.

   27. Zmuda, M., Y. Morton, “Calibrating non-GPS navigation sensors for use in robot localization,” Proc. ION NTM, 1137-1146, Jan. 2007.

   28. Miller, C., Pickering, K., B. Samic, Y. Morton, M. Miller, “Miami metro bus tracking,” Proc. ION GNSS, 3089-3093, Fort-Worth, TX, Sep. 2006.

   29. Smith, J., S. Campbell, Y. Morton, “Design and implementation of a control algorithm for an autonomous lawn mower,” Proc. 48^th IEEE Int’l Midwest Sym. Cir. & Sys., 456-459, Cincinnati, OH, Aug. 2005.

   30. McNally, B., M. Stutzman, C. Korando, J. Macasek, C. Mantz, S. Miller, Y. Morton, S. Campbell, J. Leonard, “The Miami Red Blade: an autonomous lawn mower,” Proc. ION Annual Meeting, 538-542, Dayton, OH, Jun. 2004.