• IP-Based Networking as Part of the Design of a Payload Control System

      Horan, Stephen; Aaronscooke, Ryan; Jaramillo, Daniel; New Mexico State University (International Foundation for Telemetering, 2008-10)
      As part of a project to develop small satellites, we have developed a combined ground station and flight computer that use IP-based networking for the command and telemetry data communications. The network uses a private IP network between the payload and the ground-station. Commands are sent to the payload as UDP short message packets. Status and real-time telemetry are sent as UDP text strings. Production data are sent as files using a ftp-type of data exchange. Production data types include numeric data (sensor data) and JPEG-formatted picture data (full pictures and thumbnails). Details of the software used, challenges of making the system work over a low-quality radio link, and integration with the operating system will be discussed.
    • Using Labview to Design a Payload Control System

      Horan, Stephen; New Mexico State University (International Foundation for Telemetering, 2008-10)
      As part of a project to develop small satellites, we have developed a combined ground station and flight computer control software package using LabVIEW. These computer systems are used to acquire data from sensors, control communications links, provide automatic data acquisition capabilities, and provide a user interface. In this paper, we will look at the state machines that describe both sets of software, the challenges for the flight computer development given the PC/104 format, and show how the final product was deployed.