Title :
Optimizing performances of the ENVISAT ASAR ScanSAR modes
Author :
Guarnieri, A. Monti ; Desnos, Yves-Louis
Author_Institution :
Dipt. di Elettronica, Politecnico di Milano, Italy
Abstract :
This paper focuses on the optimization of the image quality in the two ScanSAR modes of the forecoming ASAR sensor. The best trade-off between Noise Equivalent σ0 (NEσ0) and Equivalent Number of Looks (ENL) is achieved by optimizing a set of system and processing parameters. The optimization exploits a suitable end-to-end system model. This includes a closed form expression to compute ENL in a general case. Recommendations for processing and mosaicking are provided
Keywords :
geophysical signal processing; geophysical techniques; radar imaging; remote sensing by radar; spaceborne radar; synthetic aperture radar; terrain mapping; ASAR; ENVISAT; Equivalent Number of Looks; Noise Equivalent σ0; SAR; ScanSAR; end-to-end system model; geophysical measurement technique; image quality; land surface; mosaic; performance optimization; radar imaging; radar remote sensing; synthetic aperture radar; terrain mapping; Azimuth; Bandwidth; Focusing; Image quality; Image resolution; Pulse generation; Quantization; Shape; Space technology; White noise;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International
Conference_Location :
Hamburg
Print_ISBN :
0-7803-5207-6
DOI :
10.1109/IGARSS.1999.772086
