Open Architecture Standard for NASA's Software-Defined Space Telecommunications Radio Systems

NASA is developing an architecture standard for software-defined radios used in space- and ground-based platforms to enable commonality among radio developments to enhance capability and services while reducing mission and programmatic risk. Transceivers (or transponders) with functionality primarily defined in software (e.g., firmware) have the ability to change their functional behavior through software alone. This radio architecture standard offers value by employing common waveform software interfaces, method of instantiation, operation, and testing among different compliant hardware and software products. These common interfaces within the architecture abstract application software from the underlying hardware to enable technology insertion independently at either the software or hardware layer. This paper presents the initial Space Telecommunications Radio System (STRS) Architecture for NASA missions to provide the desired software abstraction and flexibility while minimizing the resources necessary to support the architecture

cOOKie, a Tool for Developing RF Communication Systems for the Internet of Things

There is a need for high-efficiency short-range wireless communications to connect IoT devices that have low to medium security requirements. A hardware/software tool was developed to help IoT product developers quickly and easily develop radio frequency (RF) communication systems for IoT devices where previously this was a manual, one-off process. The tool uses Software Defined Radio (SDR) and focuses on On-Off-Keying (OOK) modulation. It can be used by persons with limited knowledge of RF to analyze existing devices and capture its characteristics, which can be used to create and transmit new messages, in effect spoofing it. New device definitions can be implemented in low-cost off-the-shelf hardware for production. OOK has been found to be very efficient at binary RF communications because the transmitter is only powered when a “1” is being transmitted. This efficiency translates into a battery life of up to one year. Implementations of this system could include arrays of sensors that periodically transmit data to a traditionally-powered Internet-connected receiver. Another possible use of this system could be low-cost small transmitters to track animal movements in a defined area. Receivers placed around the area could record the time and signal strength of the transmissions. Software would be used to analyze the data and plot the animal’s movements. Because the RF transmissions have a specific range, the opportunity to intercept, modify or spoof communications is highly variable. For sensitive data, rolling codes and/or public/private key encryption could be used for encoding before modulating with OOK