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Research Output

2020

Methodology to estimate ionospheric scintillation risk maps and their contribution to position dilution of precision on the ground

Koulouri, A., Smith, N., Vani, B. C., Rimpilainen, V., Astin, I. & Forte, B., 4 Feb 2020, In : Journal of Geodesy. 94, 2, 22.

Research output: Contribution to journalArticle

Open Access
2019

Sea-surface properties from the 100 kHz ground wave delay

Astin, I. & Sarma, J., 12 Mar 2019, URSI AP-RASC 2019 URSI Asia Pacific Radio Science Conference.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Open Access
2018

An Improved Accuracy Model Employing an e-Navigation System

Lebekwe, C. K., Yahya, A. & Astin, I., 15 Aug 2018, 2018 9th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2018. Chakrabarti, S. & Saha, H. N. (eds.). IEEE, p. 152-158 7 p. 8796700. (2018 9th IEEE Annual Ubiquitous Computing, Electronics and Mobile Communication Conference, UEMCON 2018).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Space weather disruptions to satellite navigation and telecommunications in the case of interdependent services

Forte, B., Vani, B. C., Smith, N., Astin, I., Monico, J. F. G., Ruffenach, A., Flintoft, I., Concannon, A., McCormack, L. & Koulouri, A., 9 Nov 2018.

Research output: Contribution to conferencePoster

2016
Open Access
File
88 Downloads (Pure)
Open Access
File
7 Citations (Scopus)
113 Downloads (Pure)
2015

Map of low-frequency electromagnetic noise in the sky

Füllekrug, M., Mezentsev, A., Watson, R., Gaffet, S., Astin, I., Smith, N. & Evans, A., 16 Jun 2015, In : Geophysical Research Letters. 42, 11, p. 4648-4653 6 p.

Research output: Contribution to journalArticle

Open Access
11 Citations (Scopus)

Multipath propagation of low-frequency radio waves inferred from high-resolution array analysis

Füllekrug, M., Smith, N., Mezentsev, A., Watson, R., Astin, I., Gaffet, S., Evans, A. & Rycroft, M., 1 Nov 2015, In : Radio Science. 50, 11, p. 1141-1149 9 p.

Research output: Contribution to journalArticle

Open Access
8 Citations (Scopus)
65 Downloads (Pure)

Remote sensing of soil moisture using the propagation of Loran-C navigation signals

Feng, Y. & Astin, I., Jan 2015, In : IEEE Geoscience and Remote Sensing Letters. 12, 1, p. 195-198

Research output: Contribution to journalArticle

Open Access
File
9 Citations (Scopus)
122 Downloads (Pure)

Technical Note: remote sensing of sea surface salinity using the propagation of low-frequency navigation signals

Astin, I. & Feng, Y., 7 Sep 2015, In : Ocean Science. 11, 5, p. 695-698 4 p.

Research output: Contribution to journalArticle

Open Access
File
133 Downloads (Pure)
2014

Array analysis of electromagnetic radiation from radio transmitters for submarine communication

Füllekrug, M., Mezentsev, A., Watson, R., Gaffet, S., Astin, I. & Evans, A., 28 Dec 2014, In : Geophysical Research Letters. 41, 24, p. 9143-9149

Research output: Contribution to journalArticle

Open Access
File
12 Citations (Scopus)
113 Downloads (Pure)

Automated identification and tracking of polar-cap plasma patches at solar minimum

Burston, R., Hodges, K., Astin, I. & Jayachandran, P. T., 2014, In : Annales Geophysicae. 32, 3, p. 197-206 10 p.

Research output: Contribution to journalArticle

Open Access
File
3 Citations (Scopus)
102 Downloads (Pure)

Technical note: The horizontal scale dependence of the cloud overlap parameter α

Astin, I. & Di Girolamo, L., 2014, In : Atmospheric Chemistry & Physics. 14, 18, p. 9917-9922 6 p.

Research output: Contribution to journalArticle

Open Access
File
2 Citations (Scopus)
94 Downloads (Pure)
2010

Turbulent times in the northern polar ionosphere?

Burston, R., Astin, I., Mitchell, C., Alfonsi, L., Pedersen, T. & Skone, S., Apr 2010, In : Journal of Geophysical Research. 115, A4, 12 p., A04310.

Research output: Contribution to journalArticle

12 Citations (Scopus)

Using ionospheric imaging combined with feature tracking to automate identification and tracking of polar-cap plasma patches

Burston, R., Hodges, K., Astin, I., Bergeot, N., Bruyninx, C. & Chevalier, J-M., 2010, 23rd International Technical Meeting of the Satellite Division of the Institute of Navigation 2010, ION GNSS 2010. Fairfax, VA.: Institute of Navigation, p. 343-348 6 p.

Research output: Chapter in Book/Report/Conference proceedingChapter

2 Citations (Scopus)
2009

Correlation between scintillation indices and gradient drift wave amplitudes in the northern polar ionosphere

Burston, R., Astin, I., Mitchell, C. N., Alfonsi, L., Pedersen, T. & Skone, S., Jul 2009, In : Journal of Geophysical Research. 114, A7, A07309.

Research output: Contribution to journalArticle

13 Citations (Scopus)

The sporadic radiant and distribution of meteors in the atmosphere as observed by VHF radar at Arctic, Antarctic and equatorial latitudes

Younger, P. T., Astin, I., Sandford, D. J. & Mitchell, N. J., 2009, In : Annales Geophysicae. 27, 7, p. 2831-2841 11 p.

Research output: Contribution to journalArticle

23 Citations (Scopus)

Transionospheric attenuation of 100 kHz radio waves inferred from satellite and ground based observations

Füllekrug, M., Parrot, M., Ash, M., Astin, I., Williams, P. & Talhi, R., Mar 2009, In : Geophysical Research Letters. 36, 6, 5 p., L06104.

Research output: Contribution to journalArticle

File
13 Citations (Scopus)
105 Downloads (Pure)
2008

Combining CALIPSO and Meteosat Images to Study the Distribution of Atmospheric Dust

Wiltshire, B., Govindan, R., Astin, I. & Evans, A. N., Jul 2008, p. III-178-III-181.

Research output: Contribution to conferencePaper

File
108 Downloads (Pure)
2006

Salinity assimilation using S(T): Covariance relationships

Haines, K., Blower, J. D., Drecourt, J. P., Liu, C., Vidard, A., Astin, I. & Zhou, X., 2006, In : Monthly Weather Review. 134, 3, p. 759-771 13 p.

Research output: Contribution to journalArticle

31 Citations (Scopus)

Sampling uncertainty properties of cloud fraction estimates from random transect observations

van de Poll, H. M., Grubb, H. & Astin, I., 2006, In : Journal of Geophysical Research. 111, D22

Research output: Contribution to journalArticle

14 Citations (Scopus)

The relationship between alpha and the cross-correlation of cloud fraction

Astin, I. & Di Girolamo, L., 2006, In : Quarterly Journal of the Royal Meteorological Society. 132, 620, p. 2475-2478 4 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)
2005

Salinity Assimilation Using S(T) Relationships: Part 1 Theory

Haines, K., Blower, J., Drecourt, J-P., Liu, C., Astin, I., Zhou, X. & Vidard, A., 2005.

Research output: Contribution to conferencePaper

Vertical structure of currents in the vicinity of the Iceland-Scotland Ridge

Carollo, C., Astin, I. & Graff, J., 2005, In : Annales Geophysicae. 23, 6, p. 1963-1975 13 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Vertical structure of extreme currents in the Faroe-Bank Channel

Carollo, C., Astin, I. & Graff, J., 2005, In : Annales Geophysicae. 23, 6, p. 1977-1986 10 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2004

Extreme Events in Ocean Currents through Depth in the Vicinity of the Iceland-Scotland Ridge

Carollo, C. & Astin, I., 2004.

Research output: Contribution to conferencePaper

2003

Large Events in Ocean Currents

Carollo, C. & Astin, I., 2003.

Research output: Contribution to conferencePaper

Minimizing systematic errors in cloud fraction estimates from spaceborne cloud radars

Astin, I. & Di Girolamo, L., 2003, In : Journal of Atmospheric and Oceanic Technology. 20, 5, p. 707-716 10 p.

Research output: Contribution to journalArticle

Space-borne clear air lidar measurements in the presence of broken cloud

Astin, I. & Kiemle, C., 2003, In : Annales Geophysicae. 21, 3, p. 639-647 9 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)
2001

Bayesian confidence intervals for true fractional coverage from finite transect measurements: Implications for cloud studies from space

Astin, I., Di Girolamo, L. & van de Poll, H. M., 2001, In : Journal of Geophysical Research: Atmospheres. 106, D15, p. 17303-17310 8 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)
2000

Rapid variations in echo power maps of VHF radar backscatter from the lower atmosphere

Worthington, R. M., Palmer, R. D., Fukao, S., Yamamoto, M. & Astin, I., 1 May 2000, In : Journal of Atmospheric and Solar-Terrestrial Physics. 62, 7, p. 573-581 9 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)
1999

A general formalism for the distribution of the total length of a geophysical parameter along a finite transect

Astin, I. & Di Girolamo, L., 1 Dec 1999, In : IEEE Transactions on Geoscience and Remote Sensing. 37, 1 II, p. 508-512 5 p.

Research output: Contribution to journalArticle

15 Citations (Scopus)
1998

A case for exponential cloud fields?

Astin, I. & Latter, B. G., 1 Oct 1998, In : Journal of Applied Meteorology. 37, 10 PART II, p. 1375-1382 8 p.

Research output: Contribution to journalArticle

Open Access
12 Citations (Scopus)

Data retrieval considerations for a spaceborne cloud radar

Richards, B. E. & Astin, I., 1 Dec 1998, In : Proceedings of SPIE - The International Society for Optical Engineering. 3495, p. 275-283 9 p.

Research output: Contribution to journalConference article

1 Citation (Scopus)
1997

A statistical study of underestimates of wind speeds by VHF radar

Thomas, L., Astin, I. & Worthington, R. M., 1 Jan 1997, In : Annales Geophysicae. 15, 6, p. 805-812 8 p.

Research output: Contribution to journalArticle

Open Access
15 Citations (Scopus)

Confidence interval estimation for YHF doppler radar measurements of wind velocities

Astin, I., 1 Nov 1997, In : Radio Science. 32, 6, p. 2221-2231 11 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
1994

The form of metre-scale turbulence at mesopause heights in summer

Thomas, L. & Astin, I., 1 Jan 1994, In : Journal of Atmospheric and Terrestrial Physics. 56, 4, p. 467-478 12 p.

Research output: Contribution to journalArticle

1992

The characteristics of VHF echoes from the summer mesopause region at mid-latitudes

Thomas, L., Astin, I. & Prichard, I. T., 1 Jan 1992, In : Journal of Atmospheric and Terrestrial Physics. 54, 7-8, p. 969-977 9 p.

Research output: Contribution to journalArticle

1991

Compression and rarefaction of F-region plasma caused by an atmospheric gravity wave

Thomas, L. & Astin, I., 1 Jan 1991, In : Journal of Atmospheric and Terrestrial Physics. 53, 1-2, p. 49-52 4 p.

Research output: Contribution to journalArticle

The rapid fading of radio waves reflected from sporadic-E ionization

Astin, I. & Thomas, L., 1 Jan 1991, In : Journal of Atmospheric and Terrestrial Physics. 53, 1-2, p. 99-104 6 p.

Research output: Contribution to journalArticle