Estimating the effective spatial resolution of an AVHRR time series
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Abstract
A method is proposed to estimate the spatial degradation of geometrically rectified AVHRR data resulting from misregistration and off-nadir viewing, and to infer the cumulative effect of these degradations over time. Misregistrations are measured using high resolution imagery as a geometric reference, and pixel sizes are computed directly from satellite zenith angles. The influence or neighbouring features on a nominal 1 km by 1 km pixel over a given site is estimated from the above information, and expressed as a spatial distribution whose spatial frequency response is used to define an effective field-of-view (EFOV) for a time series. In a demonstration of the technique applied to images from the Conterminous U.S. AVHRR data set, an EFOV of 3·1km in the east-west dimension and 19 km in the north-south dimension was estimated for a time series accumulated over a grasslands test site.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Estimating the effective spatial resolution of an AVHRR time series |
| Series title | International Journal of Remote Sensing |
| DOI | 10.1080/01431169608949122 |
| Volume | 17 |
| Issue | 15 |
| Year Published | 1996 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Earth Resources Observation and Science (EROS) Center |
| Description | 10 p. |
| First page | 2971 |
| Last page | 2980 |
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