Accession Number : ADA259077


Title :   Etann Hardware Implementation for Radar Emitter Identification


Descriptive Note : Master's thesis,


Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING


Personal Author(s) : Calvin, Jr, James B


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a259077.pdf


Report Date : Dec 1992


Pagination or Media Count : 155


Abstract : This study investigated classification of 30 radar emitters with 16 signal features using Intel's 80170NX chip, the Electronically Trainable Analog Neural Network (ETANN). Software tools were developed to characterize the ETANN sigmoidal transfer function for use in a custom simulator, known as Neural Graphics. Neural Graphics operates on a Silicon Graphics workstation. The Intel Neural Network Training System simulators were used in early experiments, but were found to be inefficient in training on data used in this research. Using a modified Neural Graphics simulator, single chip and multi-chip experiments were performed to provide benchmark results prior to performing chip-in-loop training. By maximizing off-chip training accuracy, the need for on-chip training is minimized and therefore the device life is prolonged. Several single chip and multi-chip configurations were tried; the final architecture which produced the maximum on-chip classification accuracy was a hierarchical network. The maximum on-chip classification accuracy for a single chip implementation of 30 classes without chip-in-loop training was 83 percent. Again without chip-in- loop training, the maximum on-chip classification accuracy for a hierarchical configuration with the 30-class problem was 87 percent. Radar emitter identification, ETANN, Neural network hardware.


Descriptors :   *NEURAL NETS , *NETWORKS , *IDENTIFICATION , *EMITTERS , SIMULATORS , TRANSFER FUNCTIONS , ACCURACY , SILICON , CLASSIFICATION , ANALOGS , LOOPS , ARCHITECTURE , TRANSFER , GRAPHICS , CONFIGURATIONS , SIGNALS , RADAR , TOOLS , TRAINING , FUNCTIONS


Subject Categories : Active & Passive Radar Detection & Equipment
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE