If you made any changes in Pure these will be visible here soon.

Research Output 1991 2019

2019

An Improved Accuracy Model Employing an e-Navigation System

Lebekwe, C., Yahya, A. & Astin, I., 15 Aug 2019, IEEE Xplore Digital Library: 2018 9th Annual IEEE Ubiquitous Computing, Electronics & Mobile Communication Conference (UEMCON). p. 152-158 7 p.

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

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

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
53 Downloads (Pure)
Open Access
File
polar regions
alternating current
direct current
gradients
electric fields
7 Citations (Scopus)
61 Downloads (Pure)
Open Access
File
polar caps
turbulence
gradients
scintillation
Dynamics Explorer 2 satellite
2015
10 Citations (Scopus)

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
electromagnetic noise
sky
low frequencies
electromagnetism
particle precipitation
7 Citations (Scopus)
65 Downloads (Pure)

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., 18 Dec 2015, In : Radio Science. 50, 11, p. 1141-1149 9 p.

Research output: Contribution to journalArticle

Open Access
7 Citations (Scopus)
66 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
71 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
Loran-C
sea surface salinity
navigation
remote sensing
SMOS
2014
11 Citations (Scopus)
58 Downloads (Pure)

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
3 Citations (Scopus)
51 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
polar caps
plasma
satellite navigation systems
data inversion
Earth rotation
2 Citations (Scopus)
45 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
cloud cover
parameter
2010
12 Citations (Scopus)

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

Ionosphere
Scintillation
ionospheres
scintillation
ionosphere
2 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

GPS
plasma
radio
electron
ionosphere
2009
13 Citations (Scopus)

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

Ionosphere
Scintillation
ionospheres
scintillation
plasma drift
22 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

13 Citations (Scopus)
52 Downloads (Pure)

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
radio wave
radio waves
loran
attenuation
navigation
2008
61 Downloads (Pure)

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
CALIPSO
Meteosat
dust
SEVIRI
sensor
2006
30 Citations (Scopus)

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

salinity
ocean
isotherm
assimilation
temperature profile
14 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

uncertainty
transect
sampling
Sampling
lidar
9 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

distribution
parameter
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

4 Citations (Scopus)

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

Scotland
Iceland
ridges
residual flow
tidal current
2 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

deep water
residual flow
Acoustic Doppler Current Profiler
extreme event
return period
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

Systematic errors
Radar
Sampling
Weibull distribution
Spatial distribution
4 Citations (Scopus)

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

optical radar
lidar
air
differential absorption lidar
England
2001
16 Citations (Scopus)

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

confidence interval
confidence
transect
intervals
Climate models
2000
10 Citations (Scopus)

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

1999
15 Citations (Scopus)

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

1998
12 Citations (Scopus)

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
1 Citation (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

1997
15 Citations (Scopus)

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
2 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

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