White Papers

Exploring the Telemetry Network Standard (TmNS)

August 23, 2021 | BY: Paul Cook, Stephen Willis

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Flight test instrumentation has changed dramatically over the last decade. DAUs have transitioned from using protocols like PCM to Ethernet, which facilitates higher traffic, increased compatibility, and access to many useful features available in the commercial space. The increased data and desire to access more control over onboard systems from the ground has led to significant recent interest in using a bi-directional, Ethernet-like telemetry protocol. Commercial protocols, such as 5G, are being investigated for such a role.

Figure 1: TmNS represents a paradigm shift from PCM to Ethernet-based telemetry

Figure 1: TmNS represents a paradigm shift from PCM to Ethernet-based telemetry

Another standard explicitly developed for telemetry, the Telemetry Network Standard (TmNS), was recently released in IRIG 106-19 [1]. TmNS identifies interfaces for configuration, management, network transport protocols, telemetry link, and various other system and component capabilities. TmNS system is a new tool for the flight test telemetry industry. Its system requirements touch all of the standard flight test equipment, including data acquisition units (DAU), switches, recorders, radios, and the ground complements such as the antenna and the ground system software. This white paper presents an overview of TmNS, its core benefits, and a comparison to 5G.

The Telemetry Network Standard (TmNS)

TmNS aims to move telemetry into the network age, representing a paradigm shift from unidirectional PCM architectures. It hopes to increase test efficiency, utilize the available RF spectrum more efficiently, and improve the interoperability and sustainability of airborne and ground systems. It identifies interfaces for configuration, management, network transport protocols, telemetry link, and various other system and component capabilities. TmNS system requirements have implications for all standard flight test equipment, including data acquisition units (DAU), switches, recorders, radios, and ground complements such as the antenna and the ground system software.

Read the full white paper: Exploring the Telemetry Network Standard (TmNS).

Author’s Biography

Paul Cook

Director of Missile Systems, Curtiss-Wright Defense Solutions

Paul Cook is the Director of Missile Systems at Curtiss-Wright Defense Solutions. He has 37 years of extensive design and product line experience in Telemetry Systems. He has held both engineering and management positions in Design & Development, Embedded Encryption, RF Subsystems and Data Links, Engineering & Business Management, and Program Management. He has 34 years of experience in the Telemetry industry and 3 years in Information Assurance Type I CCEP certifications. Paul joined Teletronics in 2007 and in addition, worked in the Telemetry Industry for General Dynamics Corporation, Aydin Corporation, and L-3 Communications Corporation. Paul obtained a BS degree from The College of New Jersey and has various postgraduate courses towards a MBA and Program Management Certifications.

Author’s Biography

Stephen Willis

Marketing Portfolio Manager

Stephen Willis works for Curtiss-Wright in the role of Marketing Portfolio Manager. He has a degree in Electrical Engineering, a Masters in Philosophy for research in mathematical models and their market application for risk assessment and a PG Dip in marketing and management. His current research interests include data acquisition, recording and control systems and their applications in enabling a cost effective route to gathering large amounts of data. In particular, applications of interest include flight test, crash protected recording and structural/ usage monitoring programs. He is the author of several of academic papers and magazine articles.

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