ABSTRACT
This chapter provides a general description of Signals Intelligence collection and the role it plays in the intelligence production cycle. It discusses the various types of communications intelligence collection. Modern technology has brought many benefits, including facsimile communications and mutichannel communications. The major problem with multichannel communications intelligence collection is separating the individual components of the host of signals transmitted simultaneously. In the performance of the Electronic Intelligence (ELINT) function, the source of the signal can be located by direction finding. ELINT collection and processing can provide an Electronic Order of Battle as well as a technical data base of information which can be used in creating an electronic warfare capability. Although Foreign Instrumentation Signals Intelligence (FISINT) is concerned with a multitude of systems operations and development, perhaps the best and most significant subcategory of FISINT is telemetry intelligence (TELINT). TELINT concerns that technical and intelligence information derived from the intercept processing and analysis of foreign telemetry.
