Hi !
It is well incoherent to pre-calibrate a UAV camera using a chessboard on a screen, even on a large TV As photoscan_user said, best consistent results are obtained while focusing toward infinity.
Consequently, even if sharp images may be observed (by our eyes) when taken 5 meters far from the screen,
a one-pixel-sharpness cannot be obtained closer than 10-12 meters, or even 15 m in a gloomy room
(Results coming from calculation using Phantom 4 Pro features)So either you got a 15m x 22m screen, or this process is impossible.
But furthermore, pre-calibrate such commercial cameras with lots of small distortions (fitted by k3-k4 & p3-p4) wouldn't be accurate with a 15x22 chessboard where only square corners can be used. It would indeed required big enough squares to be detected, and so not a really huge amount of points.
Conversely, a large and well-overlapped survey with an overabundance of accurate GCPs would allow you to calculate in-situ calibration that will fit the whole sensor, together with a thousands redundancy !
Nevertheless, keep in mind that such sensor may suffer changes depending on survey weather conditions. Then, a well-determined in-situ pre-calibration will help you a lot to keep a small survey a good stability, but above a certain number of pictures, release inner parameters will be better to fit the most to the daily camera alterations !
Regards