GPS Position Manager Application

Overview

The GPS Position Manager Application is an OBC default application that interfaces with the GNSS receiver to track satellite position and notifies other applications as the vehicle reaches ground-station overpasses.

Data Input

Reads application configuration table
Receives data from Communication Application designated as originating from GPS module
Accepts input from the limit checker application in case of a detected fault

Data Output

Sends command structs to the Communication Application with instructions to package as CSP and send to GPS module
Publishes GPS data on GPS topic

Data Processing

Builds GPS command structs
Monitors the current satellite velocity and position data output by the ADCS, performing common transformations on the data

Integration Points with PULSE-A Applications

Communication Manager Application: Sends GPS commands and receives GPS module data
ADCS Manager Application: Provides position data
Power Manager Application: Requests power activation

Integration Points with NASA Provided Applications

SBN Application: Connects to Software Bus Network
Limit Checker Application: Receives fault notifications

Integration Points with Hardware

GPS Module: Interfaces with GNSS receiver hardware

Integration Points with Other Software

Software Bus: Publishes GPS topic data