PHaRLAP
Version: 4.7PHaRLAP is a MATLAB toolbox for the study and modelling of the propagation of High Frequency (HF) radio waves in the Earth's ionosphere. It provides 2D and fully magneto-ionic 3D numerical ray tracing (NRT) engines, analytical ray tracing (ART) routines and the necessary supporting routines.
Caveats:
The numerical ray trace routines require gridded profiles of the Earth's ionosphere and magnetic field. Users supply their own models or employ the International Reference Ionophere and International Geomagnetic Reference Field models supplied with PHaRLAP.
Inputs
UT date and time, frequency, elevation, and azimuth angles of the wave’s starting point, and latitude and longitude of the source location, number of hops, background ionosphere, collision frequency and geomagnetic field.
Outputs
Properties of the wave along its path such as group range, phase, attenuation, coordinates of potential reflection from the ionosphere, coordinates of arrival to ground, etc.
Model is time-dependent.
Change Log
Releases are accessible at: https://www.dst.defence.gov.au/our-technologies/pharlap-provision-high-frequency-raytracing-laboratory-propagation-studies Changelog is accessible from within the release
Domains
- Global Ionosphere
Space Weather Impacts
- Ionosphere variability (navigation, communications)
Phenomena
- Variablility of Plasma Density
- Equatorial Anomaly
- Traveling Ionospheric Disturbances
- HF Signal Absorption
Publications
- Cervera, M. A., and T. J. Harris (2014), Modeling ionospheric disturbance features in quasi-vertically incident ionograms using 3-D magnetoionic ray tracing and atmospheric gravity waves, J. Geophys. Res. Space Physics, 119, 431–440, doi:10.1002/2013JA019247.
- Pederick, L. H., and M. A. Cervera (2016), A directional HF noise model: Calibration and validation in the Australian region, Radio Sci., 51, 25–39, doi:10.1002/2015RS005842.
- Pederick, L. H., and M. A. Cervera (2016), Modeling the interference environment in the HF band, Radio Sci., 51, 82–90, doi:10.1002/2015RS005856.
- D. B. Francis, M. A. Cervera and G. J. Frazer, "Performance prediction for design of a network of skywave over-the-horizon radars," in IEEE Aerospace and Electronic Systems Magazine, vol. 32, no. 12, pp. 18-28, December 2017, doi: 10.1109/MAES.2017.170056.
- Cervera, M. A., Francis, D. B., & Frazer, G. J. (2018). Climatological model of over-the-horizon radar. Radio Science, 53, 988–1001. https://doi.org/10.1029/2018RS006607
- D. J. Edwards, M. A. Cervera and A. D. MacKinnon, "High Frequency Land Backscatter Coefficients Over Northern Australia and the Effects of Various Surface Properties," in IEEE Transactions on Antennas and Propagation, vol. 70, no. 7, pp. 5819-5830, July 2022, doi: 10.1109/TAP.2022.3161534.
- Edwards D, Cervera M, MacKinnon A. A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients. Remote Sensing. 2022; 14(9):2139. https://doi.org/10.3390/rs14092139.
- Edwards D, Cervera M. Seasonal Variation in Land and Sea Surface Backscatter Coefficients at High Frequencies. Remote Sensing. 2022; 14(21):5514. https://doi.org/10.3390/rs14215514.
Code
Code Languages: FORTRAN 2008, MATLAB, and C
Relevant Links
Contacts
- Manuel Cervera, null (Model Developer)
- Reza Janalizadeh Choobbasti, CCMC/GSFC/NASA (CCMC Model Host)
- Jia Yue, NASA/GSFC (CCMC Model Host)
Publication Policy
Please add the following acknowledgement to any published material which contains results obtained using this toolbox:
"The results published in this paper were obtained using the HF propagation toolbox, PHaRLAP, created by Dr Manuel Cervera, Defence Science and Technology Group, Australia (manuel.cervera@dsto.defence.gov.au). This toolbox is available by request from its author."
In addition to any model-specific policy, please refer to the General Publication Policy.