hello!where can i found document : DO-245A, Minimum Aviation System Performance Standards for Local Area Augmentation System ( LAAS)This is document RTCA/ DO-245Awww.rtca.org it is for moneythanx

RTCA Documents (similar to RTCM) are not publically available online. Your only option is to either purchase an online or printed copy. When I was doing some WAAS research a few years back, we had to purchase a copy of the relavant spec I needed.Another option would be to affiliate yourself with an organization that has access to the entire library.