VOLUME I Multinational Maritime Tactical Instructions and Procedures

CHAPTER 5
Electronic and Acoustic Warfare (EAW)
MTP 1(D), Vol. I
5100 INTRODUCTION AND SCOPE
SECTION I — OBJECTIVES AND ORGANIZATION
This chapter covers the basic procedures and instructions for electronic and acoustic warfare
together with emission policy and control. The ability of a military force, as part of the overall information
operations plan (see AJP-1), to make effective use of the electromagnetic and acoustic spectrum while, at
the same time, preventing or reducing the enemy use thereof, will play an important part in deciding the
outcome of any future conflict. A comprehensive and viable emission plan together with capable
electronic and acoustic warfare systems are as important as any other plan or weapon system in a
commander’s arsenal, and must be fully integrated into all military operations. For the purpose of this
chapter, EAW means electronic and/or acoustic warfare.
NOT RELEASABLE
5101 DEFINITIONS
a. Electronic Warfare (EW). Military action to exploit the electromagnetic spectrum, which
encompasses the search for, the interception and the identification of the electromagnetic emissions, the
employment of the electromagnetic energy, including directed energy, to reduce or prevent hostile use of
electromagnetic spectrum, and actions to ensure its effective use by friendly forces.
EW comprises three divisions:
(1) Electronic Warfare Support Measures (ESM). That division of EW involving action
taken to search for, intercept, and identify electromagnetic emissions and locate their sources for the
purpose of immediate threat recognition. It provides a source of information required for immediate decisions
involving ECM, EPM, and other tactical actions.
(2) Electronic Countermeasures (ECM). That division of EW involving actions taken to prevent
or reduce an enemy’s effective use of the electromagnetic spectrum, through the use of electromagnetic
energy. There are three subdivisions of ECM — electronic jamming, electronic deception, and
electronic neutralization.
(3) Electronic Protective Measures (EPM). That division of EW involving actions taken to
ensure friendly effective use of the electromagnetic spectrum despite the enemy’s use of the electromagnetic
energy. There are two subdivisions of EPM — active EPM and passive EPM.
(a) Active EPM. Detectable measures, such as altering transmitter parameters as necessary,
to ensure friendly effective use of the electromagnetic spectrum.
(b) Passive EPM. Undetectable measures, such as operating procedures and technical
features of equipment, which are meant to ensure friendly effective use of the electromagnetic
spectrum.
b. Electronic Order of Battle (EOB). A list of emitters used by a force or in a scenario with
specific information on the electromagnetic characteristics, parameters, location, and platforms of these
emitters.
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