VOLUME I Multinational Maritime Tactical Instructions and Procedures

MTP 1(D), Vol. I
5122 EW REPORTING OF CONFIDENCE LEVELS
a. Recognition of electronic emitters can be difficult, either because transmissions are short, or
because transmitted parameters are common to many emitters. False reports may not only lower the
confidence of the command in EW, but also may cause wrong decisions. Therefore, an operator is to
indicate his confidence in his assessment of an intercept.
b. Confidence levels as indicated are to be used in voice reporting:
(1) Confidence 1: Doubtful. The operator is unsure about the recognition of an intercept because
it is based on estimated rather than measured information.
(2) Confidence 2: Possible. The operator has some reservations on the recognition of an intercept
because it is based on limited intercept information and/or falls within common parameters of other
emitters.
(3) Confidence 3: Probable. Recognition of an intercept based on measured parameters which,
although coinciding with those of the stated emitter, are common to some other enemy and/or friendly
emitters. The EWC may ask for the spot numbers of alternative emitters.
(4) Confidence 4: Certain. A recognition of an intercept based on measured parameters which
coincides accurately with those of the stated emitter.
c. Normally the OTC/CWC/PWCs will indicate in their operational signals the confidence level
required for preplanned responses (e.g., SAU/SAG detachment, orders for engagements, etc.).
5123 EW INTERCEPT BEARING ACCURACY
Bearing accuracy of an intercept must be reported as soon as it can be estimated to permit
triangulation of the source emitter. Bearing accuracy of any radar jamming experienced should be
reported. Accuracy should be reported by use of suffixes detailed at Article 2107.
5-4 CHANGE 2