This is an old revision of the document!
A note about XML: This handbook uses the original syntax of TMATS which was developed before XML was in general use. Since then, an XML version of TMATS has been published. The development of the XML version took a “transliteration” approach. That is, for the most part, there is a one-to-one mapping between the keywords in both syntaxes. Appendix A discusses the differences in more detail. But for now, this document will focus on the concepts and basic functionality provided by both.
If you are reading this, then you probably have some idea what the Telemetry Attributes Transfer Standard (TMATS) is; but let’s cover the basics, just in case. Let’s start with “telemetry,“ which is the process of remotely collecting data. The normal application of TMATS is for telemetry being transmitted using a radio signal from a test vehicle to a ground station where people are using the data to monitor what’s happening on the vehicle. As the word “attributes” implies, TMATS is used to describe this signal.
At a very basic level, the two main things to describe are the signal characteristics and the details necessary to decipher the digitally encoded data being carried by that signal. The description of a particular signal is provided using a set of attributes – in the form of code name:value pairs – in an ASCII text file.
So without further adieu, let’s look at an extremely simple TMATS file.