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Author:Molina Hurtado, Daniel
Title:Interferometric Processing of TanDEM-X Images for Forest Height Estimation
Publication type:Final Project work
Publication year:2012
Pages:xv + 83      Language:   eng
Department/School:Radiotieteen ja -tekniikan laitos
Main subject:Avaruustekniikka   (S-92)
Supervisor:Hallikainen, Martti
Instructor:Praks, Jaan
Electronic version URL: http://urn.fi/URN:NBN:fi:aalto-201210203325
OEVS:
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Location:P1 Ark Aalto  763   | Archive
Keywords:synthetic aperture radar
interferometry
biomass
forest height
coherence
digital elevation model
interferogram
canopy height model
TerraSAR-X
TanDEM-X
Abstract (eng): Biomass is one of the most desired parameters for applications like climate modelling, resource assessment or wood industry.
By using allometry equations (82) it is possible to obtain biomass information from canopy height.
Some studies have demonstrated that current interferometric techniques applied to airborne Synthetic Aperture Radar (SAR) images can provide fairly accurate estimates of tree height (45, 52, 53, 54).
Space based interferometric methods can provide global estimates of canopy height but they require very accurate orbit information.
In this work the ability of the recently launched SAR satellites TerraSAR-X and TanDEM-X to estimate canopy height is evaluated.

To do this, a complete interferometric processing chain is created including SAR data reading into memory, complex interferogram calculation, interferogram flattening by at Earth approximation and image transformation to geographical coordinates.

Finally the resulting phase height maps are compared with a digital elevation model and a canopy height model of the terrain under study as well as with X-band E-SAR data from the FINSAR campaign (52, 53, 54) of the same area.
ED:2012-10-09
INSSI record number: 45352
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