# 0.6 Appendix and references

 Page 1 / 1
This module provides a MATLAB program for processing Synthetic Aperture Radar (SAR) data as well as the references for our project.

## Matlab function for processing sar data

`function img = sar_lin(f,az_lin,iq_lin)`

`% INITIALIZATION`

`R=4*pi*f/3e8;% Transformation of Time Freqeuncy to Spatial Frequency`

`A=pi/180*az_lin;% Transformation of Angle in degree to radians`

`for j=1:147`

`A(j)=A(j)-2*pi;% Adjustment so that all angular values are between 0 and pi`

`end`

`% Initialization of Cartesian Grid`

`X=zeros(1,175);`

`Y=zeros(175,1);`

`for j=1:175`

`X(j)=208+(j-1);`

`Y(j)=208+(j-1);`

`end`

`val=zeros(175);% Initialize the matrix of values in the cartesian grid.`

`% INTERPOLATOR`

`for j=1:175`

`j % Update on how far we are.`

`for k=1:175`

`r=sqrt(X(j)^2+Y(k)^2);`

`a=atan(Y(k)/X(k));`

`if (r>R(1)&r<R(512))`

`% Data index of cartesian point`

`J=ceil((r-R(1))*511/(R(512)-R(1)));`

`K=ceil((a-A(1))*1540/(A(1541)-A(1)));`

`% Linearly interpolate the cartesian point with its 4 nearest neighbor polar data points.`

`% Interpolate in R`

`v0 = 1/(R(J+1)-R(J)) * ( iq_lin(J,K)*(R(J+1)-r) + iq_lin(J+1,K)*(r-R(J)) );`

`v1 = 1/(R(J+1)-R(J)) * ( iq_lin(J,K+1)*(R(J+1)-r) + iq_lin(J+1,K+1)*(r-R(J)) );`

`% Interpolate in THETA`

`val(j,k) = 1/(A(K+1)-A(K)) * ( v0*(A(K+1)-a) + v1*(a-A(K)) );`

`end`

`end`

`end`

`% Plot the interpolated values`

`figure(1)`

`imagesc(abs(val));`

`% Take the 2d inverse DFT to get the image`

`img = ifft2(val);`

`% Plot the image`

`figure(2)`

`imagesc(abs(img));`

D. C. Munson Jr., J. D. O’Brien, W. K. Jenkins, “A Tomographic Formulation of Spotlight-Mode Synthetic Aperture Radar,” Proc. IEEE, vol. 71, pp 917-925, August 1983.

D. C. Munson Jr., R. L. Visentin, “A Signal Processing View of Strip-Mapping Synthetic Aperture Radar,” IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 37, no. 12, pp 2131-2147, December 1989.

G. D. Martin, A. W. Doerry, “SAR Polar Format Implementation with MATLAB,” Sandia National Laboratories, SAND2005-7413, November 2005.

P. Buxa, L. Gorham, Lt. M. Lukacs, “Mapping of a 2D SAR Backprojection Algorithm to an SRC Reconfigurable Computing MAP Processor,” Air Force Research Laboratory, Sensors Directorate.

what is variations in raman spectra for nanomaterials
I only see partial conversation and what's the question here!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
why?
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
what does nano mean?
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
absolutely yes
Daniel
how did you get the value of 2000N.What calculations are needed to arrive at it
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!          