search query: @keyword forest / total: 7
reference: 5 / 7
« previous | next »
Author:Holmberg, Jan Peter
Title:Prediction of Forest Backscatter by Applying a Single Tree Scattering Model
Uppskattning av Bakåtspridning från Skogsterräng Genom Applicering av en Spridningsmodell för ett Enskilt Träd
Publication type:Master's thesis
Publication year:2005
Pages:viii + 76 s. + liitt. 5      Language:   eng
Department/School:Sähkö- ja tietoliikennetekniikan osasto
Main subject:Avaruustekniikka   (S-92)
Supervisor:Pulliainen, Jouni
Instructor:Praks, Jaan
OEVS:
Electronic archive copy is available via Aalto Thesis Database.
Instructions

Reading digital theses in the closed network of the Aalto University Harald Herlin Learning Centre

In the closed network of Learning Centre you can read digital and digitized theses not available in the open network.

The Learning Centre contact details and opening hours: https://learningcentre.aalto.fi/en/harald-herlin-learning-centre/

You can read theses on the Learning Centre customer computers, which are available on all floors.

Logging on to the customer computers

  • Aalto University staff members log on to the customer computer using the Aalto username and password.
  • Other customers log on using a shared username and password.

Opening a thesis

  • On the desktop of the customer computers, you will find an icon titled:

    Aalto Thesis Database

  • Click on the icon to search for and open the thesis you are looking for from Aaltodoc database. You can find the thesis file by clicking the link on the OEV or OEVS field.

Reading the thesis

  • You can either print the thesis or read it on the customer computer screen.
  • You cannot save the thesis file on a flash drive or email it.
  • You cannot copy text or images from the file.
  • You cannot edit the file.

Printing the thesis

  • You can print the thesis for your personal study or research use.
  • Aalto University students and staff members may print black-and-white prints on the PrintingPoint devices when using the computer with personal Aalto username and password. Color printing is possible using the printer u90203-psc3, which is located near the customer service. Color printing is subject to a charge to Aalto University students and staff members.
  • Other customers can use the printer u90203-psc3. All printing is subject to a charge to non-University members.
Location:P1 Ark S80     | Archive
Keywords:remote sensing
polarimetric
forest
backscatter
ground roughness
ICA
LIGNUM
IEM
SAR
fjärranalys
polarimetrisk
skog
bakåtspridning
ojämn mark
Abstract (eng): In this thesis a study and further development of a single tree scattering model, used to predict forest backscatter, has been carried out.
The existing scattering model is presented, together with the simulations where it has been used.
The single tree scattering model is fully polarimetric and coherent.
It uses the infinite cylinder approximation (ICA) to calculate the scattered field from a collection of dielectric cylinders, together forming a tree.
The cylinder tree has been generated by the LIGNUM tree growth model.

The results of the improved scattering model, to which ground roughness has been added, are presented and compared with, the results of the previous model, as well as with SAR (synthetic aperture radar) measurements.
The improved model uses an integral equation model (IEM) to model scattering from the ground.
The results of the improved model are in good agreement with SAR measurements.
The single tree scattering model has also been used to predict the forest canopy extinction, by applying the forward scattering theorem.
The results of the extinction estimates have been compared with a semi-empirical model.
ED:2005-04-13
INSSI record number: 28271
+ add basket
« previous | next »
INSSI