Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

A review of earth-viewing methods for in-flight assessment of modulation transfer function and noise of optical spaceborne sensors

Philippe Blanc 1 Lucien Wald 1
1 CEP/Sophia
CEP - Centre Énergétique et Procédés
Abstract : Several earth observation satellites bear optical imaging sensors whose outputs are essential in many environmental aspects. This paper focuses on two parameters of the quality of the imaging system: the Modulation Transfer Function (MTF) and Signal to Noise Ratio (SNR). These two parameters evolve in time and should be periodically monitored in-flight to control the quality of delivered images and possibly mitigate defaults. Only a very limited number of past and current sensors have an on-board calibration device fully appropriate to the assessment of the noise and none of them has capabilities for MTF assessment. Most often, vicarious techniques should be employed which are based on the Earth-viewing approach: an image, or a combination of images, is selected because the landscape offers certain properties, e.g., well-marked contrast or on the contrary, spatial homogeneity, whose knowledge or modeling permit the assessment of these parameters. Several methods have been proposed to perform in-flight assessments. This paper proposes a review of the principles and techniques employed in this domain.
Document type :
Preprints, Working Papers, ...
Complete list of metadatas

Cited literature [52 references]  Display  Hide  Download

https://hal-mines-paristech.archives-ouvertes.fr/hal-00745076
Contributor : Magalie Prudon <>
Submitted on : Friday, October 26, 2012 - 11:43:53 AM
Last modification on : Wednesday, October 14, 2020 - 4:02:06 AM
Long-term archiving on: : Sunday, January 27, 2013 - 3:38:20 AM

File

Working_Paper_MTF_SNR_blanc-wa...
Files produced by the author(s)

Identifiers

  • HAL Id : hal-00745076, version 1

Citation

Philippe Blanc, Lucien Wald. A review of earth-viewing methods for in-flight assessment of modulation transfer function and noise of optical spaceborne sensors. 2009. ⟨hal-00745076⟩

Share

Metrics

Record views

510

Files downloads

2195