Skip to main content
padlock icon - secure page this page is secure

NEDT influence in the thermal band selection of satellite-borne instruments

Buy Article:

$55.00 + tax (Refund Policy)

This work focuses on the impact of noise in the channel configuration of thermal sensors, in two aspects. The first one is related to the selection of an optimal band configuration to calculate accurate land surface temperatures (LSTs). The second one addresses the impact of noise level on the absolute error in temperature estimates, for the chosen band combination. These issues are studied beyond the analysis performed in previous works, where spectrally constant low-level noise values were considered. The study is based on the comparison of LST errors yielded by different potential channel configurations. The sensitivity analysis is performed using a quadratic split-window model regressed by least-squares techniques on a database containing LST and brightness temperatures for a wide range of atmospheric and surface conditions. In this analysis all sources of uncertainty are taken into account, and the influence of the procedures used to remove the effects of the Modulation Transfer Function is also considered. The results reveal that: (i) the Noise Equivalent Difference of Temperature (NEDT) should not be higher than ±0.3 K at 300 K within the 10-12.5 m window, and ±0.2 K at 300 K within the 8-9.5 m spectral region, to assure an accuracy better than ±1.2 K in LST, and (ii) the combinations (10.1-10.8)/(11.7-12.4), (10.1-10.8)/(11.8-12.5) and (10.1-10.8)/(11.5-12.5) m on the one hand, and (8.0-8.5)/(8.5-9.0) m on the other hand, are the optimal configurations within the two specified windows, respectively.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 10 September 2002

More about this publication?
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more