In the context of aviation and aerospace, "Aviation Binary Phase Shift Keying" does not appear to be a widely used or recognized term.

However, "Binary Phase Shift Keying" (BPSK) is a modulation technique used in digital communication systems, including aviation and aerospace. In BPSK, binary data (0s and 1s) is encoded onto a carrier wave by shifting the phase of the wave. This technique is commonly used in satellite communication systems, including those used in aviation and aerospace.

It's possible that "Aviation Binary Phase Shift Keying" is a term used in a specific context or application, but without further information, it's difficult to provide a more detailed explanation.

In aviation and aerospace, BPSK is used in various communication systems, including:

1. Satellite communication systems: BPSK is used to modulate data transmitted between aircraft and ground stations via satellite.
2. Automatic Dependent Surveillance-Broadcast (ADS-B) systems: BPSK is used to modulate the GPS position and velocity data transmitted by aircraft.
3. Data link communication systems: BPSK is used to modulate data transmitted between aircraft and air traffic control, such as clearances and instructions.

Overall, while "Aviation Binary Phase Shift Keying" may not be a widely recognized term, Binary Phase Shift Keying is an important modulation technique used in various aviation and aerospace communication systems.