The Doppler moment transform in Doppler tomography
Author
Summary, in English
The problem of reconstructing two-dimensional vector fields from tomographic measurements based on Doppler techniques is addressed. Measurements are made along lines, from which distributions of the field component parallel to the line are obtained. A new transform, the Doppler moment transform, which extracts local information from such data, is introduced. In contrast to most previous approaches in vector tomography that are only able to treat solenoidal fields, the Doppler moment transform provides information also of the irrotational part of the field. Specifically, it gives rise to partial differential equations in the field components. Properties of the new transform and the corresponding equations are discussed, shedding light on questions of uniqueness. It is also shown that the differential equations can be combined to form algebraic equations in the field components. Finally, a reconstruction scheme is constructed and some numerical experiments are provided.
Department/s
Publishing year
2005
Language
English
Pages
1249-1274
Publication/Series
Inverse Problems
Volume
21
Issue
4
Links
Document type
Journal article
Publisher
IOP Publishing
Topic
- Mathematics
Status
Published
Research group
- Harmonic Analysis and Applications
ISBN/ISSN/Other
- ISSN: 0266-5611