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Application of polar cap absorption events to the calibration of riometer systems

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Application of polar cap absorption events to the calibration of riometer systems. / Hargreaves, J. K.; Detrick, D. L.
In: Radio Science, Vol. 37, No. 3, 2002, p. 7/1-7/11.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Hargreaves, JK & Detrick, DL 2002, 'Application of polar cap absorption events to the calibration of riometer systems', Radio Science, vol. 37, no. 3, pp. 7/1-7/11. https://doi.org/10.1029/2001RS002465

APA

Hargreaves, J. K., & Detrick, D. L. (2002). Application of polar cap absorption events to the calibration of riometer systems. Radio Science, 37(3), 7/1-7/11. https://doi.org/10.1029/2001RS002465

Vancouver

Hargreaves JK, Detrick DL. Application of polar cap absorption events to the calibration of riometer systems. Radio Science. 2002;37(3):7/1-7/11. doi: 10.1029/2001RS002465

Author

Hargreaves, J. K. ; Detrick, D. L. / Application of polar cap absorption events to the calibration of riometer systems. In: Radio Science. 2002 ; Vol. 37, No. 3. pp. 7/1-7/11.

Bibtex

@article{43b098e45d3c4a4b8d7d4e4a93330f8d,
title = "Application of polar cap absorption events to the calibration of riometer systems",
abstract = "The spatial uniformity of polar cap absorption events has been exploited to test the performance of riometer systems. In an imaging riometer the use of a fixed conversion factor for obtaining the equivalent zenithal absorption from that measured with an oblique beam is verified for most of the beams, and revised factors are suggested. The readings from the corner beams are found to be unreliable, however. Factors for converting the readings from a wide-beam antenna to true zenithal values are derived. The significance of antenna sidelobes is pointed out, and the upper limits to the absorption measurement due to the temperature of the mesosphere and to uncertainty of riometer calibration at the lowest signal levels are demonstrated.",
keywords = "riometer DCS-publications-id, art-288, DCS-publications-credits, iono-fa, iris, DCS-publications-personnel-id, 6",
author = "Hargreaves, {J. K.} and Detrick, {D. L.}",
year = "2002",
doi = "10.1029/2001RS002465",
language = "English",
volume = "37",
pages = "7/1--7/11",
journal = "Radio Science",
issn = "0048-6604",
publisher = "AMER GEOPHYSICAL UNION",
number = "3",

}

RIS

TY - JOUR

T1 - Application of polar cap absorption events to the calibration of riometer systems

AU - Hargreaves, J. K.

AU - Detrick, D. L.

PY - 2002

Y1 - 2002

N2 - The spatial uniformity of polar cap absorption events has been exploited to test the performance of riometer systems. In an imaging riometer the use of a fixed conversion factor for obtaining the equivalent zenithal absorption from that measured with an oblique beam is verified for most of the beams, and revised factors are suggested. The readings from the corner beams are found to be unreliable, however. Factors for converting the readings from a wide-beam antenna to true zenithal values are derived. The significance of antenna sidelobes is pointed out, and the upper limits to the absorption measurement due to the temperature of the mesosphere and to uncertainty of riometer calibration at the lowest signal levels are demonstrated.

AB - The spatial uniformity of polar cap absorption events has been exploited to test the performance of riometer systems. In an imaging riometer the use of a fixed conversion factor for obtaining the equivalent zenithal absorption from that measured with an oblique beam is verified for most of the beams, and revised factors are suggested. The readings from the corner beams are found to be unreliable, however. Factors for converting the readings from a wide-beam antenna to true zenithal values are derived. The significance of antenna sidelobes is pointed out, and the upper limits to the absorption measurement due to the temperature of the mesosphere and to uncertainty of riometer calibration at the lowest signal levels are demonstrated.

KW - riometer DCS-publications-id

KW - art-288

KW - DCS-publications-credits

KW - iono-fa

KW - iris

KW - DCS-publications-personnel-id

KW - 6

U2 - 10.1029/2001RS002465

DO - 10.1029/2001RS002465

M3 - Journal article

VL - 37

SP - 7/1-7/11

JO - Radio Science

JF - Radio Science

SN - 0048-6604

IS - 3

ER -