Laboratory test simulation for non-flat response calibration of global Earth albedo monitor

Sehyun Seong, Sug Whan Kim, Dongok Ryu, Jinsuk Hong, Mike Lockwood

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

1 Citation (Scopus)

Abstract

In this report, we present laboratory test simulation for directional responsivity of a global Earth albedo monitoring instrument. The sensor is to observe the Sun and the Earth, alternately, and measure their shortwave (<4Îm) radiations around the L1 halo orbit to obtain global Earth albedo. The instrument consists of a broadband scanning radiometer (energy channel instrument) and an imager (visible channel instrument) with ±2°field-of-view. In the case of the energy channel instrument, radiations arriving at the viewing ports from the Sun and the Earth are directed toward the pyroelectric detector via two spherical folding mirrors and a 3D compound parabolic concentrator (CPC). The instrument responsivity is defined by the ratio of the incident radiation input to the instrument output signal. The radiometers relative directional responsivity needs to be characterized across the field-of-view to assist output signal calibration. For the laboratory test, the distant small source configuration consists of an off-axis collimator and the instrument with adjustable mounts. Using reconstructed 3D CPC surface, the laboratory test simulation for predicting the instrument directional responsivity was conducted by a radiative transfer computation with ray tracing technique. The technical details of the laboratory test simulation are presented together with future plan.

Original languageEnglish
Title of host publicationSensors, Systems, and Next-Generation Satellites XVI
PublisherSPIE
ISBN (Print)9780819492739
DOIs
Publication statusPublished - 2012 Jan 1
EventSensors, Systems, and Next-Generation Satellites XVI - Edinburgh, United Kingdom
Duration: 2012 Sep 242012 Sep 27

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8533
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherSensors, Systems, and Next-Generation Satellites XVI
CountryUnited Kingdom
CityEdinburgh
Period12/9/2412/9/27

Fingerprint

Earth albedo
monitors
Monitor
Calibration
Earth (planet)
Responsivity
Simulation
simulation
Concentrator
Radiometer
concentrators
Radiation
Radiometers
radiometers
Sun
sun
Radiative Transfer
incident radiation
output
Output

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Seong, S., Kim, S. W., Ryu, D., Hong, J., & Lockwood, M. (2012). Laboratory test simulation for non-flat response calibration of global Earth albedo monitor. In Sensors, Systems, and Next-Generation Satellites XVI [85331I] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8533). SPIE. https://doi.org/10.1117/12.974836
Seong, Sehyun ; Kim, Sug Whan ; Ryu, Dongok ; Hong, Jinsuk ; Lockwood, Mike. / Laboratory test simulation for non-flat response calibration of global Earth albedo monitor. Sensors, Systems, and Next-Generation Satellites XVI. SPIE, 2012. (Proceedings of SPIE - The International Society for Optical Engineering).
@inproceedings{c55b49c2be5c47d8b4a9051ff2a2f1da,
title = "Laboratory test simulation for non-flat response calibration of global Earth albedo monitor",
abstract = "In this report, we present laboratory test simulation for directional responsivity of a global Earth albedo monitoring instrument. The sensor is to observe the Sun and the Earth, alternately, and measure their shortwave (<4{\^I}m) radiations around the L1 halo orbit to obtain global Earth albedo. The instrument consists of a broadband scanning radiometer (energy channel instrument) and an imager (visible channel instrument) with ±2°field-of-view. In the case of the energy channel instrument, radiations arriving at the viewing ports from the Sun and the Earth are directed toward the pyroelectric detector via two spherical folding mirrors and a 3D compound parabolic concentrator (CPC). The instrument responsivity is defined by the ratio of the incident radiation input to the instrument output signal. The radiometers relative directional responsivity needs to be characterized across the field-of-view to assist output signal calibration. For the laboratory test, the distant small source configuration consists of an off-axis collimator and the instrument with adjustable mounts. Using reconstructed 3D CPC surface, the laboratory test simulation for predicting the instrument directional responsivity was conducted by a radiative transfer computation with ray tracing technique. The technical details of the laboratory test simulation are presented together with future plan.",
author = "Sehyun Seong and Kim, {Sug Whan} and Dongok Ryu and Jinsuk Hong and Mike Lockwood",
year = "2012",
month = "1",
day = "1",
doi = "10.1117/12.974836",
language = "English",
isbn = "9780819492739",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
booktitle = "Sensors, Systems, and Next-Generation Satellites XVI",
address = "United States",

}

Seong, S, Kim, SW, Ryu, D, Hong, J & Lockwood, M 2012, Laboratory test simulation for non-flat response calibration of global Earth albedo monitor. in Sensors, Systems, and Next-Generation Satellites XVI., 85331I, Proceedings of SPIE - The International Society for Optical Engineering, vol. 8533, SPIE, Sensors, Systems, and Next-Generation Satellites XVI, Edinburgh, United Kingdom, 12/9/24. https://doi.org/10.1117/12.974836

Laboratory test simulation for non-flat response calibration of global Earth albedo monitor. / Seong, Sehyun; Kim, Sug Whan; Ryu, Dongok; Hong, Jinsuk; Lockwood, Mike.

Sensors, Systems, and Next-Generation Satellites XVI. SPIE, 2012. 85331I (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8533).

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

TY - GEN

T1 - Laboratory test simulation for non-flat response calibration of global Earth albedo monitor

AU - Seong, Sehyun

AU - Kim, Sug Whan

AU - Ryu, Dongok

AU - Hong, Jinsuk

AU - Lockwood, Mike

PY - 2012/1/1

Y1 - 2012/1/1

N2 - In this report, we present laboratory test simulation for directional responsivity of a global Earth albedo monitoring instrument. The sensor is to observe the Sun and the Earth, alternately, and measure their shortwave (<4Îm) radiations around the L1 halo orbit to obtain global Earth albedo. The instrument consists of a broadband scanning radiometer (energy channel instrument) and an imager (visible channel instrument) with ±2°field-of-view. In the case of the energy channel instrument, radiations arriving at the viewing ports from the Sun and the Earth are directed toward the pyroelectric detector via two spherical folding mirrors and a 3D compound parabolic concentrator (CPC). The instrument responsivity is defined by the ratio of the incident radiation input to the instrument output signal. The radiometers relative directional responsivity needs to be characterized across the field-of-view to assist output signal calibration. For the laboratory test, the distant small source configuration consists of an off-axis collimator and the instrument with adjustable mounts. Using reconstructed 3D CPC surface, the laboratory test simulation for predicting the instrument directional responsivity was conducted by a radiative transfer computation with ray tracing technique. The technical details of the laboratory test simulation are presented together with future plan.

AB - In this report, we present laboratory test simulation for directional responsivity of a global Earth albedo monitoring instrument. The sensor is to observe the Sun and the Earth, alternately, and measure their shortwave (<4Îm) radiations around the L1 halo orbit to obtain global Earth albedo. The instrument consists of a broadband scanning radiometer (energy channel instrument) and an imager (visible channel instrument) with ±2°field-of-view. In the case of the energy channel instrument, radiations arriving at the viewing ports from the Sun and the Earth are directed toward the pyroelectric detector via two spherical folding mirrors and a 3D compound parabolic concentrator (CPC). The instrument responsivity is defined by the ratio of the incident radiation input to the instrument output signal. The radiometers relative directional responsivity needs to be characterized across the field-of-view to assist output signal calibration. For the laboratory test, the distant small source configuration consists of an off-axis collimator and the instrument with adjustable mounts. Using reconstructed 3D CPC surface, the laboratory test simulation for predicting the instrument directional responsivity was conducted by a radiative transfer computation with ray tracing technique. The technical details of the laboratory test simulation are presented together with future plan.

UR - http://www.scopus.com/inward/record.url?scp=84900005429&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84900005429&partnerID=8YFLogxK

U2 - 10.1117/12.974836

DO - 10.1117/12.974836

M3 - Conference contribution

AN - SCOPUS:84900005429

SN - 9780819492739

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Sensors, Systems, and Next-Generation Satellites XVI

PB - SPIE

ER -

Seong S, Kim SW, Ryu D, Hong J, Lockwood M. Laboratory test simulation for non-flat response calibration of global Earth albedo monitor. In Sensors, Systems, and Next-Generation Satellites XVI. SPIE. 2012. 85331I. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.974836