Publications

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Conference Proceedings
N. Yadav, Sami, S., Joshi, D. Raj, Frissell, N. A., Spalletta, R. A., Jackowitz, P. M., and Vierinen, J., “Web-Based Application for the Visualization and Analysis of Ionogram Data Observed by GNU Chirpsounder2”, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.
N. Yadav, Sami, S., Joshi, D. Raj, Frissell, N. A., Spalletta, R. A., Jackowitz, P. M., and Vierinen, J., “Web-Based Application for the Visualization and Analysis of Ionogram Data Observed by GNU Chirpsounder2”, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.
A. Schmidt, Meriwether, J. W., Cooper, M. B., Gerrard, A. J., Goodwin, L. V., Zhang, S. - R., Jeffer, G., and Callie, C., “Wave Activity in Thermospheric Vertical Winds and Temperatures at Subauroral Latitudes”, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.
S. Sami, Yadav, N., Frissell, N. A., Spalletta, R., Mulhall, D., Joshi, D. Raj, and Vierinen, J., “Toward Developing an Algorithm for Separation of Transmitters of High Frequency Chirp Signals of Opportunity for the Purpose of Ionospheric Sounding”, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.
V. I. Romanek, Frissell, N. A., Joshi, D., Liles, W., Collins, K., Gibbons, J., and Kazdan, D., “A Survey of HF Doppler TID Signatures Observed Using a Grape in New Jersey”, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.
N. A. Frissell, Sanchez, D. F., Perry, G. W., Joshi, D. Raj, Engelke, W. D., Thomas, E. G., Coster, A. J., Erickson, P. J., J. Ruohoniemi, M., and Baker, J. B. H., “Sources of Large Scale Traveling Ionospheric Disturbances Observed using HamSCI Amateur Radio, SuperDARN, and GNSS TEC”, SuperDARN Workshop. SANSA, Virtual, 2021.
N. A. Frissell, Sanchez, D. F., Perry, G. W., Kaeppler, S. R., Joshi, D. Raj, Engelke, W. D., Thomas, E. G., Coster, A. J., Erickson, P. J., J. Ruohoniemi, M., and Baker, J. B. H., “Sources of Large Scale Traveling Ionospheric Disturbances Observed using HamSCI Amateur Radio, SuperDARN, and GNSS TEC”, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.
D. Raj Joshi, Frissell, N. A., Liles, W., and Vierinen, J., “Simultaneous observations of mid-latitude Ionospheric Irregularities in HamSCI Personal Space Weather Station and SuperDARN radar”, SuperDARN Workshop. SANSA, Virtual, 2021.
S. Sami, Frissell, N. A., West, M. Lou, Joshi, D. Raj, and Vierinen, J., “An Overview of Oblique Soundings from Chirp Ionosondes”, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.
J. LaBelle, McGaw, D., Kovacs, T., Kashcheyev, A., and Jayachandran, P. T., “Observing Auroral Radio Emissions in Conjugate Hemispheres”, HamSCI Workshop 2023. HamSCI, Scranton, PA, 2023.
D. Raj Joshi, Frissell, N. A., Liles, W., and Vierinen, J., “Observations of Mid-latitude Irregularities Using the Oblique Ionosonde Sounding Mode for the HamSCI Personal Space Weather Station (Proceedings)”, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.
D. Raj Joshi, Frissell, N. A., and Vierinen, J., “Mid-latitude Irregularities Observed by the Oblique Ionosonde Sounding Mode for the HamSCI Personal Space Weather Station”, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.
D. Joshi, Frissell, N. A., Liles, W., Vierinen, J., and Miller, E. S., “Mid-latitude Irregularities in the Early Results from the Ionospheric Sounding Mode Using Chirp Ionosondes of Opportunity for the HamSCI Personal Space Weather Station”, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.
V. I. Romanek, Frissell, N. A., Joshi, D. Raj, Liles, W., Trop, C., Collins, K., and Perry, G. W., “HF Doppler Observations of Traveling Ionospheric Disturbances in the WWV Signal Received with a Network of Low-Cost HamSCI Personal Space Weather Stations”, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.
N. A. Frissell, Joshi, D. Raj, Collins, K., Aidan, M., Kazdan, D., Engelke, W. D., Atkison, T., Kim, H., Cowling, S. H., McDermott, T. C., Ackermann, J., Witten, D., Madey, J., H. Silver, W., Liles, W., Cerwin, S. A., Erickson, P. J., Miller, E. S., and Vierinen, J., “HamSCI Personal Space Weather Station (PSWS): Fall 2021 Update”, TAPR-ARRL Digital Communications Conference. ARRL-TAPR, Virtual, 2021.
N. A. Frissell, Sanchez, D., Perry, G. W., Kaeppler, S. R., Joshi, D. Raj, Engelke, W. D., Thomas, E. G., Coster, A. J., Erickson, P. J., J. Ruohoniemi, M., Baker, J. B. H., and Gerzoff, R., “HamSCI: Ham Radio Science Citizen Investigation”, ISWAT Meeting. International Space Weather Action Team (ISWAT), Virtual, 2021.
S. A. Cerwin, Collins, K. V., Joshi, D. Raj, and Frissell, N. A., “Experimental and Computational Methods to Analyze Complex Doppler Behavior of Ionospherically Induced Doppler Shifts on HF Signals (Proceedings)”, ARRL-TAPR Digital Communications Conference. ARRL-TAPR, Virtual, 2021.
S. Cerwin, Collins, K. V., Joshi, D., and Frissell, N. A., “Estimation of Ionospheric Layer Height Changes From Doppler Frequency and Time of Flight Measurements on HF Skywave Signals”, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.
A. Kashcheyev, Watson, C., and Jayachandran, P. T., “EclipseNB: A network of low-cost GNSS receivers to study ionospheric response to April 2024 solar eclipse”, HamSCI Workshop 2024. HamSCI, Cleveland, OH, 2024.
H. van de Groenendaal and Jacobs, B., “Beacon Programme to study inland Tropo in South Africa”, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.
C. Nguyen, Jordan, T., Tholley, J., and Patel, V., “An Algorithm for Determining the Timing of Components within the HamSCI-WWV/WWVH Scientific Test Signal”, HamSCI Workshop 2022. HamSCI, Huntsville, AL, 2022.
Conference Paper
N. A. Frissell, Sanchez, D. F., Perry, G. W., Joshi, D., Engelke, W. D., Thomas, E. G., Coster, A., Erickson, P. J., J. Ruohoniemi, M., and Baker, J. B. H., “Sources of Large Scale Traveling Ionospheric Disturbances Observed using HamSCI Amateur Radio, SuperDARN, and GNSS TEC”, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Virtual, 2021.
N. A. Frissell, Melville, R., Stillinger, A., and Jeffer, G., “Red Pitaya SDR Recorder for Antarctica (Demonstration)”, in HamSCI Workshop 2019, Cleveland, OH, 2019.
D. Joshi, Frissell, N. A., Liles, W., and Vierinen, J., “Observations of Mid-latitude Irregularities Using the Oblique Ionosonde Sounding Mode for the HamSCI Personal Space Weather Station”, in NSF CEDAR (Coupling, Energetics, and Dynamics of Atmospheric Regions), Virtual, 2021.
D. Raj Joshi, Frissell, N. A., M. Sarwar, S., Sami, S., J. Ruohoniemi, M., Baker, J. B. H., Coster, A. J., Erickson, P. J., Liles, W., Vierinen, J., and Groves, K., “Observations of Mid-latitude Irregularities Using the Oblique Ionosonde Sounding Mode for the HamSCI Personal Space Weather Station”, in American Geophysical Union Fall Meeting, New Orleans, LA, 2021.