Greetings,
I am trying to understands Garstang' model of light pollution, however there is few difficulties in understanding this paper.
1. There is unknown variable such as x,y and U there is essential for the calculation but not available in the data, Can i replace the x and y into the distance and radius?
2. This formula involve a few integration and differentiation, can you show me a how to solve these function?
I included the model and the whole paper in this question, that all, thank you a lot!
I am not working with light pollution and don't know the model.
But i can help with a few things
1. x and y are Cartesian coordinates so you need a transform to go to to another set of coordinates. u is related to the scattering volume so you can think of those parameters as your calculation grid.
2. integrals and differentials in formulas can very often be replaced by numerical sums and quotients etc. to get very good approximations.
Study figure 1 very carefully, it tells you a lot about the model parameters
Kind regards
Anders
Thank you for your kind reply.
If may I ask, what do you mean by transform, can you show me an example of it?
In your case it would probably be polar to Cartesian coordinates
https://en.wikipedia.org/wiki/Polar_coordinate_system#Converting_between_polar_and_Cartesian_coordinates
- Badges
- Science topic
- Similar topics
- Filing