Orbit determination with TDOA data

Hi All,

I have a generic question related to Orbit determination with TDOA data. I am using TDOA measurement created using Orekit Generator. My tdoa residuals are not random and has a sinusoidal pattern. I am still testing the code, and I have not been able to figure out the why this is happening. (I assumed that the residual would have a zero mean, random values since the measurements are simulated. )
I appreciate any inside into why this is happening ?

Thank you.

Hi @niluj,

You shouldn’t have a sinusoidal pattern if you only added Gaussian noise.
However, without some sort of code we could analyze, it’s going to be hard to help you.