Per Høeg

• Wood, Alan G.; Donegan-Lawley, Elizabeth E.; Clausen, Lasse; Spogli, Luca; Urbář, Jaroslav & Jin, Yaqi [Vis alle 20 forfattere av denne artikkelen] (2024). Statistical models of the variability of plasma in the topside ionosphere: 1. Development and optimisation. Journal of Space Weather and Space Climate. ISSN 2115-7251. 14. doi: 10.1051/swsc/2024002.
• Spogli, Luca; Jin, Yaqi; Urbář, Jaroslav; Wood, Alan G.; Donegan-Lawley, Elizabeth E. & Clausen, Lasse [Vis alle 20 forfattere av denne artikkelen] (2024). Statistical models of the variability of plasma in the topside ionosphere: 2. Performance assessment. Journal of Space Weather and Space Climate. ISSN 2115-7251. 14. doi: 10.1051/swsc/2024003.
• Høeg, Per & Carlström, Anders (2023). Sea Surface Roughness Determination from Grazing Angle GPS Ocean Observations and Scatterometry Simulations. Remote Sensing. ISSN 2072-4292. 15(15). doi: 10.3390/rs15153794. Fulltekst i vitenarkiv
• Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Urbar, Jaroslav & Rawling, James T. [Vis alle 11 forfattere av denne artikkelen] (2022). Electron density fluctuations from Swarm as a proxy for ground-based scintillation data: A statistical perspective. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2022.11.042. Fulltekst i vitenarkiv
• Paziewski, Jacek; Høeg, Per; Sieradzki, Rafal; Jin, Yaqi; Jarmolowski, Wojciech & Hoque, M. Mainul [Vis alle 12 forfattere av denne artikkelen] (2022). The implications of ionospheric disturbances for precise GNSS positioning in Greenland. Journal of Space Weather and Space Climate. ISSN 2115-7251. 12. doi: 10.1051/swsc/2022029. Fulltekst i vitenarkiv
• Wood, Alan G.; Alfonsi, Lucilla; Clausen, Lasse; Jin, Yaqi; Spogli, Luca & Urbář, Jaroslav [Vis alle 19 forfattere av denne artikkelen] (2022). Variability of Ionospheric Plasma: Results from the ESA Swarm Mission. Space Science Reviews. ISSN 0038-6308. 218(6). doi: 10.1007/s11214-022-00916-0. Fulltekst i vitenarkiv
• Urbar, Jaroslav; Spogli, Luca; Cicone, Antonio; Clausen, Lasse; Jin, Yaqi & Wood, Alan G. [Vis alle 11 forfattere av denne artikkelen] (2022). Multi-scale response of the high-latitude topside ionosphere to geospace forcing. Advances in Space Research. ISSN 0273-1177. doi: 10.1016/j.asr.2022.06.045. Fulltekst i vitenarkiv
• Jin, Yaqi; Clausen, Lasse; Miloch, Wojciech Jacek; Høeg, Per; Jarmołowski, Wojciech & Wielgosz, Pawel [Vis alle 13 forfattere av denne artikkelen] (2022). Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method. Journal of Space Weather and Space Climate. ISSN 2115-7251. 12(23). doi: 10.1051/swsc/2022022. Fulltekst i vitenarkiv
• Monte-Moreno, Enric; Hernández-Pajares, Manuel; Yang, Heng; Alberto Garcia, Rigo; Jin, Yaqi & Høeg, Per [Vis alle 13 forfattere av denne artikkelen] (2021). Method for Forecasting Ionospheric Electron Content Fluctuations Based on the Optical Flow Algorithm. IEEE Transactions on Geoscience and Remote Sensing. ISSN 0196-2892. doi: 10.1109/TGRS.2021.3126888.
• Fragner, H; Dielacher, A; Moritsch, M; Zangerl, F; Beck, P & Koudelka, O [Vis alle 16 forfattere av denne artikkelen] (2019). Recycling GPS signals and radiation monitoring: the two payloads onboard PRETTY. Proceedings of SPIE, the International Society for Optical Engineering. ISSN 0277-786X. 11131. doi: 10.1117/12.2530806.
• Cardellach, E; Wickert, J; Baggen, Rens; Benito, Javier; Camps, Adriano & Catarino, Nuno [Vis alle 36 forfattere av denne artikkelen] (2018). GNSS Transpolar Earth Reflectometry exploriNg System (G-TERN): Mission Concept. IEEE Access. ISSN 2169-3536. 6, s. 13980–14018. doi: 10.1109/ACCESS.2018.2814072.
• Høeg, P; Nielsen, TS & Olsen, A (2017). Copenhagen ITS: Forsøg med wifi-baseret positionering på H.C. Andersens Boulevard. Trafik & Veje. ISSN 1903-7384. 94(8), s. 39–42. Fulltekst i vitenarkiv
• Durgonics, T; Komjathy, A; Verkhoglyadova, O; Shume, EB; von Benzon, H-H & Mannucci, AJ [Vis alle 9 forfattere av denne artikkelen] (2017). Multiinstrument observations of a geomagnetic storm and its effects on the Arctic ionosphere: A case study of the 19 February 2014 storm. Radio Science. ISSN 0048-6604. 52, s. 146–165. doi: 10.1002/2016RS006106. Fulltekst i vitenarkiv
• Wickert, Jens; Cardellach, Estel; Martín-Neira, Manuel; Bandeiras, Jorge; Bertino, Laurent & Andersen, Ole B [Vis alle 31 forfattere av denne artikkelen] (2016). GEROS-ISS: GNSS reflectometry, radio occultation and scatterometry onboard the International Space Station. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. ISSN 1939-1404. 9(10), s. 4552–4581. doi: 10.1109/JSTARS.2016.2614428.
• Benzon, Hans-Henrik & Høeg, Per (2016). Wave optics-based LEO-LEO radio occultation retrieval. Radio Science. ISSN 0048-6604. 51, s. 589–602. doi: 10.1002/2015RS005852. Fulltekst i vitenarkiv
• Benzon, Hans-Henrik; Høeg, Per & Durgonics, Tibor (2016). Analysis of satellite-based navigation signal reflectometry: Simulations and observations. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. ISSN 1939-1404. 9(10), s. 4879–4883. doi: 10.1109/JSTARS.2015.2510667.

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• Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Alfonsi, Lucilla & Urbar, Jaroslav [Vis alle 9 forfattere av denne artikkelen] (2022). Comparison Of Electron Density Fluctuations From Swarm Satellites With The Ground-based Scintillation Data: A Statistical Perspective. Vis sammendrag

  The Swarm satellite mission is actively used to conduct various studies of the ionosphere, focusing on such aspects as the electric and magnetic fields or plasma temperature, structuring and irregularities. The mission is a constellation of three satellites that were launched in November 2013 and have been collecting data continuously since then. We use a global product based on the Swarm satellite measurements that characterizes ionospheric irregularities and fluctuations. The IPIR (Ionospheric Plasma IRregularities product) provides in-situ characteristics of plasma density structures in the ionosphere, of plasma irregularities in terms of their amplitudes, gradients and spatial scales and assigns them to geomagnetic regions. Ionospheric irregularities and fluctuations are often the cause increases the error in position, velocity, time determination based on Global Navigation Satellite Systems (GNSS), which signals pass through the ionosphere. The IPIR provides an indication, in the form of a numerical value index, on severity of irregularities for the integrity of trans-ionospheric radio signals and hence the accuracy of GNSS precise positioning. This work demonstrates that data from the Swarm satellite's flyby height can be used as a proxy for ground-based scintillation data. We compare two datasets from Swarm satellites (with 1-second resolution) and from groundbased scintillation receivers (with 1-minute resolution). To consider the measured parameters for the same area, we find time intervals when the Swarm satellites pass over the field of view of the ground-based Global Positioning System (GPS) receiver. A geometry with an elevation angle of 30° above the receiver was used to calculate these passes. We also performed an azimuthal selection of the GNSS data according to Swarm satellite fly. We used only those GPS satellites that flew near the position of the Swarm satellite in azimuth sector ±10°. We provide validations of the IPIR product against the ground-based measurements, focusing on GPS TEC and scintillation data in low and high-latitudes regions in different longitudinal sectors. We calculate median, mean, maximum and standard deviation values for parameters for both dataset for each conjunction point (for each GPS satellite and Swarm). We observe a weak trend of stronger scintillations with an increasing IPIR index, where the IPIR index presents a product of amplitudes and temporal variations in plasma densities.

• Kotova, Daria; Jin, Yaqi; Spogli, Luca; Wood, Alan G.; Urbar, Jaroslav & Rawlings, James T. [Vis alle 11 forfattere av denne artikkelen] (2022). Electron density fluctuations from Swarm as a proxy for ground-based scintillation data: A statistical perspective.
• Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Urbar, Jaroslav; Cesaroni, Claudio & Cicone, Antonio [Vis alle 15 forfattere av denne artikkelen] (2022). Swarm – VIP: Variability of Ionospheric Plasma studied and modelled based on data from the Swarm satellites.
• Jin, Yaqi; Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Urbar, Jaroslav & Cesaroni, Claudio [Vis alle 13 forfattere av denne artikkelen] (2022). Variability of Ionospheric Plasma studied and modelled based on data from the Swarm satellites .
• Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Urbar, Jaroslav; Cesaroni, C & Cicone, Antonio [Vis alle 14 forfattere av denne artikkelen] (2021). Variability of ionosphere studied and modelled based on data from the Swarm satellites.
• Miloch, Wojciech Jacek; Alfonsi, Lucilla; Spogli, Luca; Wood, Alan; Sahtahmassebi, Golnaz & Clausen, Lasse [Vis alle 10 forfattere av denne artikkelen] (2020). Variability of Ionospheric Plasma Based on Swarm Satellite Data.
• Dielacher, Andreas; Fragner, Heinz; Moritsch, Michael; Wickert, Jens; Koudelka, Otto & Høeg, Per [Vis alle 12 forfattere av denne artikkelen] (2020). First field-test results of iGNSS-R instrument of the PRETTY payload.
• Mannucci, Anthony J.; Berger, Thomas; Bortnik, Jacob; Cherniak, Iurii; Gulyaeva, Tamara & Høeg, Per [Vis alle 18 forfattere av denne artikkelen] (2019). Chapman Conference on Scientific Challenges Pertaining to Space Weather Forecasting Including Extremes: Recommendations for the Community.
• Høeg, Per & Durgonics, Tibor (2019). A new index for polar cap solar EUV irradiance for forecasting strong and extreme solar events.
• Wickert, J; Fragner, H; Cardellach, E; Høeg, Per; Beck, P & Dielacher, A [Vis alle 12 forfattere av denne artikkelen] (2019). PRETTY: CubeSat for precise altimetry using navigation satellites.
• Dielacher, A; Fragner, H; Koudelka, O; Beck, P; Wickert, J & Cardellach, E [Vis alle 7 forfattere av denne artikkelen] (2019). The ESA Passive REflectomeTry and DosimeTrY (PRETTY) mission.
• Høeg, Per & Durgonics, Tibor (2018). Cross-validation of TEC map products from IGS and ESA SWE during quiet and disturbed conditions.
• Høeg, Per & Durgonics, Tibor (2018). Influence of polar cap patch scintillations on GNSS receiver performance during geomagnetic disturbed conditions.
• Høeg, Per (2018). 4DSpace - Research Activities.
• Høeg, Per & Durgonics, Tibor (2018). Polar cap patch signatures during geomagnetic disturbed conditions.
• Durgonics, Tibor; Høeg, Per & Vennerstrøm, Susanne (2018). Multi-instrument observations of solar EUV irradiance induced ionospheric variations in the Arctic polar cap.
• Høeg, Per (2017). Cross-validation of TEC maps from ESA Ionosphere Expert Service Centre.
• Høeg, Per (2017). Space weather and signatures of polar cap patches.
• Høeg, Per (2017). Disruption of GNSS - Time for Backup.
• Fragner, H; Dielacher, A; Zangerl, F; Koudelka, O; Høeg, P & Beck, P [Vis alle 7 forfattere av denne artikkelen] (2017). PRETTY: Grazing altimetry measurements based on the interferometric method.
• Wickert, Jens; Andersen, OB; Bandeiras, J; Bertino, Laurent; Cardellach, Estel & Camps, Adriano [Vis alle 25 forfattere av denne artikkelen] (2016). Innovative sea surface monitoring with GNSS-Reflectometry aboard ISS: Overview and recent results from GEROS-ISS.

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