Remote Sensing Applications and Decision Support

Effects of line-of-sight motion on hyperspectral Fourier transform measurements

[+] Author Affiliations
Grzegorz Miecznik

Remote Sensing Technologies, LLC, 202 McDonald Court, Erie, Colorado 80516, United States

Brian R. Johnson

University of Colorado, The National Snow and Ice Data Center, CIRES, 449 UCB, Boulder, Colorado 80309, United States

J. Appl. Remote Sens. 9(1), 095982 (Dec 09, 2015). doi:10.1117/1.JRS.9.095982
History: Received August 12, 2015; Accepted November 3, 2015
Text Size: A A A

Abstract.  Atmospheric spectra reconstructed from interferometric measurements are susceptible to scene motion, which can be caused by changing environment or instrument jitter. This leads to a coupling between the time series of the modulated scene radiance and the interferogram collected as a function of time. Spectral artifacts are generated when this occurs and appear as both narrow, isolated spikes in the measurement wavelength band as well as broad, out-of-band features. Here, we derive an analytical relationship that depends on jitter frequency, amplitude and phase, and the scene gradient. The observed radiance is expressed as a spatially weighted mixture of radiance originating from various points within the scene. Spectral artifacts created by relative scene motion are shown to be proportional to the radiometric scene difference within the instrument field of view (FOV) and jitter amplitude, and vary significantly with the jitter frequency. The analytical solution can be useful in various applications, where image instability is expected to have an effect on measurements in question, ranging from spectroscopy of turbine plumes, through airborne measurements of smoke density and chemical composition in natural fire or volcanic events, to atmospheric sounding from space.

Figures in this Article
© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Grzegorz Miecznik and Brian R. Johnson
"Effects of line-of-sight motion on hyperspectral Fourier transform measurements", J. Appl. Remote Sens. 9(1), 095982 (Dec 09, 2015). ; http://dx.doi.org/10.1117/1.JRS.9.095982


Tables

Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.