I need a binary code of length 48 for my radar project. I searched a lot and could not find anything. barker codes have a maximum length of 13. I need one having a length of 48.
You may want to read the available literature a bit more thoroughly. It's hard, not to stumble upon the fact, that there are no larger true barker codes but barker like codes with similar properties. As far as I remember, the topic is addressed in most serious digital communication text books.