A SAR image sequence acquired over several months was used to study temporal variations of radar signatures of object classes which are relevant for updating topographic maps. For the selected object classes (buildings, roads, and hedgerows), the average pixel-to-pixel intensity variations are relatively stable over time intervals between data acquisitions from one month to one year. The threshold to be set in order to distinguish relevant changes from inherent signature variations decreases considerably, if signature mean values of individual objects are compared to each other rather than the signature values of individual pixels.
|Title of host publication||Proceedings of the International Geoscience and Remote Sensing Symposium IGARSS 2000|
|Place of Publication||Honolulu, HI|
|Publication status||Published - 2000|
|Event||IEEE 2000 International Geoscience and Remote Sensing Symposium - Honolulu, HI, United States|
Duration: 24 Jul 2000 → 28 Jul 2000
|Conference||IEEE 2000 International Geoscience and Remote Sensing Symposium|
|Period||24/07/2000 → 28/07/2000|