I have a model that predicts the altitude (Z) of a UAV.
The model is a sets of ODE and I solved it using ODE45.
The issue is that the UAV altitude (Z) decreases to a negative value and the program terminate as Z cannot be negative.
If Z = 0, it means that the UAV is on the surface of the earth.
Instead of giving error when Z is negative. I will like to display a message that "The object has successfully landed at location, Longitude = .. and Latitude = " and return the output of ODE45. So, I can plot all the output variables.
Please I will appreciate any help.