Matlab code that I must use it to describe the lenses

Dear Sir, My name is Mohamed Elwakdy. I am working as Research Assistant at American University in Cairo. I am working in radar project at American University from August 1, 2011 till now. In this project, I am using Matlab Program and I have difficult to solve some problems with this program. In this project, I will send the chirp signal as embedded signal in the laser beam to the object through lenses. I would like to know “What is the Matlab code that I must use it to describe the lenses??” Thank you very much Have Great and Fantastic Day Mohamed

[Walter Roberson]

What would you do with the description of the lens once you had it?

You have posted at least 3 different messages in which you inquire about aspects of the same project. It would probably make more sense to combine the messages in to one message, in which you listed the elements that you want to model and the inputs that you will have, and the outputs you want to achieve.