Common Terminology

This page contains a listing of common and useful terminology that is used throughout this wiki.

On-Board

In programming, typically in reference to an operation being performed on the same computer chip. In design, typically in reference to an object being on the airborne platform.

Off-Board

In programming, typically in reference to an operation being performed on some other computer chip. In design, typically in reference to an object being on the ground or on a different airborne platform.

Sosftware-In-The-Loop (SITL)

This is a method of running a simulation of a system completely in software. It typically involves setting up a full environment to simulate all of the hardware involved, as well as all of the software that is running.

Hardware-In-The-Loop (HITL)

This is a method of running a simulation of a system while implementing some or all of the hardware that the system will actually use. This method is usually a better indication of the performance of a system, and allows for a more involved debugging process. It typically involves running the software on the involved hardware in a simulation mode, and then providing certain information (such as the state of an aircraft or images from a camera) from a simulator or more powerful computer.