From Robust Engineering

ITT industries, avionics division - USA



To search for potential radar threats, a typical EW (electronic warfare) system employs one or more swept superheat (superheterodyne) receivers to perform signal detection and identification. Threats can be classified into two categories:

  • Low probability of intercept radar (LPI) threats

  • Pulse and pulse Doppler (PR) random threats

There are many different types of radar signals that are intended threats for a swept superheat receiver ranging from duty cycle pulsed to continuous wave (CW) waveform. The primary purpose of this project was to perform a set of experiments using Taguchi Methods to optimize the performance and robustness of a generic swept superheat receiver in the detection and identification of radar threats in a dense and time-varying EW environment.

A dramatic improvement of time to intercept (TTI) performance was seen by using optimum levels of control factors derived from a series of Taguchi experiments. The TTI criterion is based on the root-mean-squared (RMS) elapsed time of the swept superheat receiver before intercepting randomly selected radar threats. However, it does not provide clear indication of the receiver's dynamic performance in intercepting all radar threats as they appear randomly in the EW environment.

This project was planned using the probability of miss (Pm) to detect and identify radar threats versus elapsed time (T) as the performance characteristics, which is more effective in evaluating the receiver in a dynamic EW environment.


Instead of evaluating the system by a static approach, a dynamic approach...

Copyright American Supplier Institute, Inc., Genichi Taguchi, Subir Chowdhury, Shin Taguch 2000 under license agreement with Books24x7

Products & Services
Radar Systems and Products
Radar systems and radar products have synchronized transmitters and receivers that send radio waves and detect their reflections from objects, surfaces or sub-surface structures.
Spectrum Analyzers and Signal Analyzers
Spectrum analyzers and signal analyzers display raw, unprocessed signal information such as voltage, power, period, wave shape, sidebands, and frequency. They can provide the user with a clear and precise window into the frequency spectrum.
Environmental Testing and Analysis Services
Environmental testing and analytical services provide testing of environmental samples such as soil, water, air, and industrial wastes or byproducts.
Radar Absorbing Materials
Radar absorbing materials and structures are designed to absorb radar waves and convert them to heat. Because these radar waves are not returned, radar absorbing materials (RAM) and radar absorbing structures (RAS) provide a reduced signature for detection.
Fire Alarm Control Panels

Fire alarm control panels (FACPs) transmit signals between fire detection devices and alarms, suppression systems, and monitoring centers. This device reduces the potential for fatalities and property loss from structure fires.

Topics of Interest


2.1 INTRODUCTION One of the most difficult problems in inviting researchers to work on electronic warfare (EW) receivers is that the subject is not well understood, especially by academic scholars...

AC alternating current ACF autocorrelation function A/D analogue-to-digital (converter) AI artificial intelligence ARM anti-radiation missile ATC air traffic control CAT clear-air...

Arthur G. Self 4.1 Background Probability of intercept (POI) is a key performance feature of EW surveillance and reconnaissance systems; it relates to the probability of time coincidence of two or...

Overview A hypothetical interception situation can serve to illustrate a probability of intercept calculation without using the window function approach. Assume that there is a radar whose radio...