It facilitates the loading of "Black Keys" and handles Over-The-Air-Rekeying (OTAR) for secure satellite communication. Accessing the Full Specification
Even with newer interfaces like ICD-GPS-872 (for M-code), ICD-GPS-153 remains widespread because of its simplicity and vast installed base in legacy platforms (F-16s, naval navigation systems, strategic weapons). New designs should consider moving to M-code, but supporting ICD-GPS-153 is often required for retrofit or test equipment. icd-gps-153 protocol
The following is an example of an ICD-GPS-153 message: It facilitates the loading of "Black Keys" and
: It is the native protocol for several military GPS devices, most notably the (Precision Lightweight GPS Receiver) and the (Defense Advanced GPS Receiver). Protocol Characteristics Physical Layer : Utilizes standard serial communications, specifically RS-232 and RS-422 Message Structure naval navigation systems
$GPGGA,123519,4807.038,N,01131.000,E,1,08,0.9,546.4,M,46.9,M,,*74