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Communications Technology Laboratory

CTL Spectrum Science Roadmap

Overview

The National Institute of Standards and Technology (NIST) Communications Technology Laboratory (CTL) is advancing spectrum science through one of its strategic roadmaps, which will guide research investments over the next five to seven years. The Spectrum Science roadmap will identify critical research and development (R&D) gaps and emerging opportunities in spectrum metrology, spectrum sharing, and spectrum sensing to ensure the United States maintains leadership in wireless communications and electromagnetic spectrum management. By collaborating with government, industry, and academic stakeholders, CTL will align its research goals with national priorities and technological advancements.

Spectrum Science Roadmap Definition

A shared and clear understanding of spectrum science is essential for establishing research objectives and priorities. For this roadmap, CTL defines spectrum science as the multidisciplinary study and analysis of properties, utilization, and management of the electromagnetic - including optical – spectrum. It involves understanding how electromagnetic and optical waves propagate, interact with different environments, and are harnessed for communication, sensing, and other applications. Research in spectrum science addresses both theoretical foundations and practical implementations, aiming to optimize spectrum use, improve wireless technologies, and ensure coexistence among various users.

NIST CTL conducts research in spectrum science in four focus areas: State of the Art Measurement Techniques to assess the utilization of the spectrum, evaluation of methods that optimize the use of the spectrum in the form of spectrum sharing and wireless coexistence, Dynamic Systems Metrology, and Optical Time Transfer. These areas combine to bring an integrated understanding of the spectrum to deliver trusted data to anticipate and enable the dynamism of tomorrow’s spectrum landscape.

Spectrum Science Roadmap

DOWNLOAD THE SPECTRUM SCIENCE ROADMAP

Current Activities

CTL focuses on developing innovative measurement methods and tools to enhance spectrum utilization through improved access, sharing, atmospheric sensing, and precision timing. CTL research addresses current and emerging challenges in wireless communications, including higher frequencies, AI-driven systems, and non-terrestrial pathways. Key projects and programs include:

These initiatives underscore the commitment of CTL to advancing spectrum science and supporting the efficient use of this limited national resource.

Stakeholder Engagement

During the roadmapping process, CTL engaged external stakeholders in the industry sector through a working group to provide feedback on Spectrum Science gaps to ensure a comprehensive and robust approach to defining CTL goals. Stakeholders with a wide range of expertise including spectrum testing and sharing, satellite navigation, space technology, and spectrum engineering, gathered to identify additional gaps, prioritize gaps according to industry need, and discuss technology trends and innovative opportunities for research.

Goals

Demonstrate Femtosecond Timing Networks

CTL will contribute to the creation of ultra-precise timing systems that can synchronize clocks across significant distances (e.g., ground to satellites thousands of kilometers away) with accuracy down to femtoseconds (one quadrillionth of a second). CTL will accomplish this goal by working toward a next-generation global timing network that uses light-based (optical) and quantum technologies to share time signals with meticulous precision.

Develop Ultra-Sensitive Quantum Enhanced Spectrum Measurement Tools and Techniques

CTL will focus on advancing quantum technologies to enable the detection and measurement of extremely weak signals with high precision, even in complex or noisy environments. CTL will develop new methods to extend sensing capabilities into underused regions of the spectrum and across a wide range of distances, from meters to thousands of kilometers. These technologies will effectively increase the sensitivity of sensors, allowing them to detect subtle changes or faint signals that would otherwise go unnoticed, supporting applications that require precise environmental awareness across large or dynamic spaces.

Increase Spectrum Coexistence Reliability and Performance

CTL will conduct research to enhance the seamless operation of diverse wireless technologies within the same spectrum bands without causing interference or performance degradation. As the number of spectrum users continues to grow, devices (e.g., smartphones, satellites, radar systems) must share the same spectrum efficiently and reliably. CTL will work to develop standards, measurement methods, and enabling technologies that allow these systems to coexist, maintaining high performance while minimizing data loss, latency, and interference across increasingly crowded and complex spectrum environments.

Develop a Harmonized Aggregate Emissions Definition

Collaborate with spectrum stakeholders to create a shared and scientifically sound definition of aggregate emissions, supporting smarter, more reliable spectrum sharing between commercial and federal users.

Define Standards for Spectrum and Environment Sensing

Define clear standards for reliable and traceable spectrum data, from measurement methods to data quality and analysis, ensuring spectrum information is consistent, accurate, and scientifically grounded.

Gaps and Themes

Spectrum Sharing

Dynamic Spectrum Sharing and Cognitive Spectrum Access

Coexistence in Heterogeneous Applications

Measurement Methods and Techniques

Realistic Testing Environments

Standardized Measurement Techniques

Establish Trust in Spectrum Data

Measurements That Support the Ability to Quantify Interference

Aggregate Interference

Interference Characterization, Impact Prediction, and Intelligent Sensing

Improved Channel Modeling

Propagation Predication

Regulatory Framework Alignment

Measurement-Informed Policy Development Processes

Developing Robust Measurement Methods and Data Collection Strategies

Learn more about the CTL Roadmaps:

CTL ROADMAPPING OVERVIEW

Advanced communications

Created April 22, 2025, Updated August 13, 2026

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