By Richard G. Wiley

In those occasions, safely and speedy picking a stray digital blip on a radar monitor could have incalculable results. Now greater than ever, radar digital intelligence (ELINT) may be the 1st defensive position for the battlefield or the place of origin. delivering new perception into radar sign research, this booklet guarantees extra trustworthy and well timed collecting of digital intelligence. Combining and updating the author's prior definitive books on ELINT, this quantity is the imperative reference for each ELINT specialist. beginning with easy idea, it offers a entire and built-in view of radar's position in ELINT. The e-book explains how one can determine various sessions of radar signs and ensure their resource and placement. It covers platforms functionality matters and evaluates the strengths and weaknesses of other platforms configurations. The ebook additionally publications radar platforms engineers via demanding situations of designing new generations of ELINT structures.

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Extra info for ELINT: The Interception and Analysis of Radar Signals (The Artech House Radar Library)

Sample text

The two basic methods available to measure the noise figure of a network using a noise generator (source) are: (1) increase the external noise by 3 dB, and (2) measure the Y-factor. In the 3-dB power-increase method, the device under test and the external amplifier (if one is used) must be capable of supplying a power output 3 dB above the network’s internal noise level and remain in linear operation (not saturated). 5(a, b) shows typical equipment configurations. 5(b)] with the 3-dB pad out of the signal path.

6 ␮ s. ) This optimum PRI could be estimated through ELINT analysis. The pulse duration is a standard ELINT parameter and the bandwidth B could be estimated through high-resolution spectral analysis. This is a typical PRF for a medium PRF radar. While the PRI must be switched among several values to detect targets and resolve ambiguities, the PRIs might be near this value. A typical multimode radar might use a set of eight PRIs during one look at a target. The design could be such that the target can be detected on at least three of the eight PRIs regardless of the range and velocity of the target.

The smallest signal that can be analyzed depends on what the analysis process is like and what its purpose is. 108 Other Quadrature Frank Polyphase 36 Characteristics of ELINT Interception Systems crossed a threshold. Likewise, the largest signal that can be tolerated also depends on the measurement being made. Making a precise ERP measurement when the radar’s main beam is pointed toward the intercept receiver requires that saturation be minimized; whereas a frequency measurement can be made after a limiter and saturation is of little importance if only one signal is present.

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