All modern forces depend on the electromagnetic spectrum (EMS). The military requirement for unimpeded access to, and use of, the EMS is the key focus for joint electromagnetic spectrum operations (JEMSO), both in support of military operations and as the focus of operations themselves. Electronic warfare (EW) is essential for protecting friendly operations and denying adversary operations within the EMS throughout the operational environment.
JEMSO are the coordinated efforts of EW and joint electromagnetic spectrum management operations (JEMSMO) to exploit, attack, protect, and manage the electromagnetic operational environment (EMOE). The impact of an EMOE upon the operational capability of military forces, equipment, systems, and platforms is referred to as electromagnetic environmental effects. It encompasses all electromagnetic (EM) disciplines to include electromagnetic compatibility; electromagnetic interference; EM vulnerability; electromagnetic pulse (EMP); electronic protection (EP); hazards of EM radiation to personnel, ordnance, and volatile materials; and natural phenomena effects such as sunspots, lightning, and precipitation static.
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Military operations are executed in an environment complicated by increasingly complex demands on the electromagnetic spectrum (EMS). All modern forces depend on the EMS. The EMS is the entire range of electromagnetic (EM) radiation. At one end of the spectrum are gamma rays, which have the shortest wavelengths and high frequencies. At the other end are radio waves, which have the longest wavelengths and low frequencies. The EMS is used to organize and explain the types of EM energy that exist in our world and throughout the universe. Devices whose functions depend upon the EMS are used by both civilian and military organizations and individuals for intelligence; communications; positioning, navigation, and timing (PNT); sensing; command and control (C2); attack; ranging; data transmission; and information storage and processing. The military requirement for unimpeded access to, and use of, the EMS is the key focus for joint electromagnetic spectrum operations (JEMSO), both in support of military operations and as the focus of operations themselves. Electronic warfare (EW) is essential for protecting friendly operations and denying adversary operations within the EMS throughout the operational environment (OE).
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