I am designing a LEO constellation (altitudes between 300-600 to be more specific) for a term project and i have some issues. My goal is to design a satellite constellation which takes images of a location on earth as close as possible to 1 hour time interval.
Currently my setup is like this:
altitude 350 km, inclination 96.5 degrees to achieve sun synchronous orbit.
6 orbital planes which are 30 degrees apart from each other.
each plane has 3 satellites which are 120 degrees apart from each other
so i have 18 satellites in total.
I used this setup on STK, pick a point on earth, used 7 day for calculation interval. I calculated elevation angles for that point on each passes left me only with a few results which are not even close to my goal.
So what i am asking is:
- To achieve my goal, what are things i need to consider while determining orbital parameters.
Number of satellites is not limited to 18. Only limiting factor is altitude and interval between passing from same spot by any of the satellites.
I am not expecting a full solution but if you direct me to the right direction i will be very happy.