Description of the code ANVIL (ANisotropic Vhf Impulse Location)
Abstract
Abstract We have developed a general, three‐dimensional method to locate sources of earth‐directed radiation that takes into account the flight paths of reflected signals. While time‐of‐arrival algorithms exist for locating radio sources using line‐of‐sight propagation paths, radio sources originating above the surface of the Earth will not necessarily emit strong power along direct paths to satellites. A combination of direct and ground‐reflected pulses or only ground‐reflected signals from such sources could be received by satellite‐borne sensors. The work presented here applies to satellite detection of subionospheric radio sources in a vacuum environment with ideal reflection off the Earth's surface. Because satellites are not static receivers, their configuration with respect to a radio source is not always optimal. Therefore, a statistical study is performed using 1,000 randomized configurations of 24 satellites in middle Earth orbit. For each configuration, the radio source latitude and longitude is fixed, and its altitude is varied from 1 to 97 km. An analytic direct‐path algorithm using the five satellites nearest the radio source provides an initial guess for the radio source latitude and longitude. We find that, using this approximation, the mean error in the calculated nadir location has a maximum value of 134 m for the 97‐kmmore »
- Authors:
-
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Northwestern Univ., Evanston, IL (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1475342
- Alternate Identifier(s):
- OSTI ID: 1477798
- Report Number(s):
- LA-UR-18-23924
Journal ID: ISSN 0048-6604
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Radio Science
- Additional Journal Information:
- Journal Volume: 53; Journal Issue: 10; Journal ID: ISSN 0048-6604
- Publisher:
- American Geophysical Union
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; satellite; geolocation of radio sources; reflection; TOA; radio
Citation Formats
Ortiz, Alexander E., and Morris, Heidi E. Description of the code ANVIL (ANisotropic Vhf Impulse Location). United States: N. p., 2018.
Web. doi:10.1029/2018RS006626.
Ortiz, Alexander E., & Morris, Heidi E. Description of the code ANVIL (ANisotropic Vhf Impulse Location). United States. https://doi.org/10.1029/2018RS006626
Ortiz, Alexander E., and Morris, Heidi E. Fri .
"Description of the code ANVIL (ANisotropic Vhf Impulse Location)". United States. https://doi.org/10.1029/2018RS006626. https://www.osti.gov/servlets/purl/1475342.
@article{osti_1475342,
title = {Description of the code ANVIL (ANisotropic Vhf Impulse Location)},
author = {Ortiz, Alexander E. and Morris, Heidi E.},
abstractNote = {Abstract We have developed a general, three‐dimensional method to locate sources of earth‐directed radiation that takes into account the flight paths of reflected signals. While time‐of‐arrival algorithms exist for locating radio sources using line‐of‐sight propagation paths, radio sources originating above the surface of the Earth will not necessarily emit strong power along direct paths to satellites. A combination of direct and ground‐reflected pulses or only ground‐reflected signals from such sources could be received by satellite‐borne sensors. The work presented here applies to satellite detection of subionospheric radio sources in a vacuum environment with ideal reflection off the Earth's surface. Because satellites are not static receivers, their configuration with respect to a radio source is not always optimal. Therefore, a statistical study is performed using 1,000 randomized configurations of 24 satellites in middle Earth orbit. For each configuration, the radio source latitude and longitude is fixed, and its altitude is varied from 1 to 97 km. An analytic direct‐path algorithm using the five satellites nearest the radio source provides an initial guess for the radio source latitude and longitude. We find that, using this approximation, the mean error in the calculated nadir location has a maximum value of 134 m for the 97‐km source altitude. The coordinates of the initial guess are used to define the origin of a grid within which an all‐points search refinement is performed. Using this procedure, the overall maximum mean error in radio source position is found to be on the order of the computational grid size.},
doi = {10.1029/2018RS006626},
journal = {Radio Science},
number = 10,
volume = 53,
place = {United States},
year = {Fri Sep 21 00:00:00 EDT 2018},
month = {Fri Sep 21 00:00:00 EDT 2018}
}
Figures / Tables:
Works referenced in this record:
High energy cosmic ray particles and the most powerful discharges in thunderstorm atmosphere
journal, August 2004
- Gurevich, A. V.; Zybin, K. P.
- Physics Letters A, Vol. 329, Issue 4-5
Determination of source thunderstorms for VHF emissions observed by the FORTE satellite
journal, January 2001
- Tierney, Heidi E.; Jacobson, Abram R.; Beasley, William H.
- Radio Science, Vol. 36, Issue 1
Kinetic theory of runaway air breakdown
journal, March 1994
- Roussel-Dupré, R. A.; Gurevich, A. V.; Tunnell, T.
- Physical Review E, Vol. 49, Issue 3
An Overview of Lightning Locating Systems: History, Techniques, and Data Uses, With an In-Depth Look at the U.S. NLDN
journal, August 2009
- Cummins, Kenneth L.; Murphy, Martin J.
- IEEE Transactions on Electromagnetic Compatibility, Vol. 51, Issue 3
FORTE observations of lightning radio-frequency signatures: Capabilities and basic results
journal, March 1999
- Jacobson, Abram R.; Knox, Stephen O.; Franz, Robert
- Radio Science, Vol. 34, Issue 2
Phenomenology of transionospheric pulse pairs: Further observations
journal, November 1998
- Massey, Robert S.; Holden, Daniel N.; Shao, Xuan-Min
- Radio Science, Vol. 33, Issue 6
Observations of VHF source powers radiated by lightning
journal, January 2001
- Thomas, R. J.; Krehbiel, P. R.; Rison, W.
- Geophysical Research Letters, Vol. 28, Issue 1
Balloon‐borne x‐ray spectrometer for detection of x rays produced by thunderstorms
journal, May 1996
- Eack, Kenneth B.
- Review of Scientific Instruments, Vol. 67, Issue 5
On the retrieval of lightning radio sources from time-of-arrival data
journal, November 1996
- Koshak, William J.; Solakiewicz, Richard J.
- Journal of Geophysical Research: Atmospheres, Vol. 101, Issue D21
Radio frequency emissions from a runaway electron avalanche model compared with intense, transient signals from thunderstorms
journal, January 2005
- Tierney, Heidi E.
- Journal of Geophysical Research, Vol. 110, Issue D12
A class of unusual lightning electric field waveforms with very strong high-frequency radiation
journal, January 1989
- Willett, J. C.; Bailey, J. C.; Krider, E. P.
- Journal of Geophysical Research, Vol. 94, Issue D13
Coincident radio frequency and optical emissions from lightning, observed with the FORTE satellite
journal, November 2001
- Light, T. E.; Suszcynsky, D. M.; Jacobson, A. R.
- Journal of Geophysical Research: Atmospheres, Vol. 106, Issue D22
Phenomenology of transionospheric pulse pairs
journal, September 1995
- Massey, R. S.; Holden, D. N.
- Radio Science, Vol. 30, Issue 5
Transionospheric pulse pairs originating in maritime, continental, and coastal thunderstorms: Pulse energy ratios: TRANSIONOSPHERIC PULSE PAIRS
journal, June 2002
- Tierney, Heidi E.; Jacobson, Abram R.; Roussel-Dupré, Robert
- Radio Science, Vol. 37, Issue 3
FORTE radio-frequency observations of lightning strokes detected by the National Lightning Detection Network
journal, June 2000
- Jacobson, Abram R.; Cummins, Kenneth L.; Carter, Michael
- Journal of Geophysical Research: Atmospheres, Vol. 105, Issue D12
Determining the source of strong LF/VLF TIPP events: Implications for association with NPBPs and NNBPs
journal, August 2000
- Zuelsdorf, R. S.; Franz, R. C.; Strangeway, R. J.
- Journal of Geophysical Research: Atmospheres, Vol. 105, Issue D16
N-Dimension Golden Section Search: Its Variants and Limitations
conference, October 2009
- Chang, Yen-Ching
- 2009 2nd International Conference on Biomedical Engineering and Informatics
Figures / Tables found in this record: