Optimizing performances of the ENVISAT ASAR ScanSAR modes

Author

Guarnieri, A. Monti ; Desnos, Yves-Louis

Author_Institution

Dipt. di Elettronica, Politecnico di Milano, Italy

Volume

3

fYear

1999

fDate

1999

Firstpage

1758

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 1999. IGARSS '99 Proceedings. IEEE 1999 International

Conference_Location

Hamburg

Print_ISBN

0-7803-5207-6

Type

conf

DOI

10.1109/IGARSS.1999.772086

Filename

772086