Electromagnetic (electronic) warfare
Electromagnetic radiation (“spectrum”) is essential for modern warfare. What challenges and opportunities does electromagnetic warfare present to the UK?

Earth observation (EO) is the process of gathering information about the Earth from a range of sensors to provide monitoring data at a range of scales. This POSTnote outlines some of the environmental uses and benefits of EO data, the potential opportunities from advances in relevant technologies and challenges facing the effective use of EO data.
Environmental Earth Observation (431 KB , PDF)
DOI: https://doi.org/10.58248/PN566
The focus of this note is the growing applications environmental remote sensing. Satellites collect data via a number of sensor types, including optical sensors, which derive information about the Earth from reflected sunlight, and radar sensors, which transmit and receive microwave pulses to assess, for example, the texture of the surface. Advantages of remote sensing over in situ observations include:
Key points in this POSTnote include:
POSTnotes are based on literature reviews and interviews with a range of stakeholders and are externally peer reviewed. POST would like to thank interviewees and peer reviewers for kindly giving up their time during the preparation of this briefing, including:
*Denotes people who acted as external reviewers of the briefing.
Environmental Earth Observation (431 KB , PDF)
Electromagnetic radiation (“spectrum”) is essential for modern warfare. What challenges and opportunities does electromagnetic warfare present to the UK?
This POSTnote describes regenerative agriculture, the evidence for beneficial outcomes, and outlines the challenges and opportunities for its wider adoption.
This POSTnote summarises debates on regulatory approaches for addressing the environmental impacts arising from per- and poly- fluoroalkyl substances (PFAS).