# How does the error in azimuth angle vary as one moves away from the boresight direction of a radar

My question is basically same as the title. I am trying to find a mathematical model which provides the error, $d\theta$, in azimuth angle($\theta$) as one moves away from the boresight direction of radar. It is also known that the error in the radar data is also a function of distance ($r$) from the radar. So, in order to incorporate the distance from the radar, can anyone tell me how model $d\theta$ as a function of $\theta$ and $r$?

• What kind of radar? Scanning pulse radar, phased array, digital beam forming passive radar....? – Marcus Müller Dec 20 '16 at 10:10
• It is a single beam monopulse radar. – user146290 Dec 20 '16 at 23:38