公开(公告)号：US20230004763A1

公开(公告)日：2023-01-05

申请号：US17503205

申请日：2021-10-15

Applicant: BAE SYSTEMS Information and Electronic Systems Integration Inc.

Inventor： James M. Stankowicz, JR. ,  Joseph M. Carmack ,  Scott A Kuzdeba ,  Steven Schmidt

IPC: G06K9/62 ,  G06K9/00

Abstract: A Deep-Learning (DL) explainable AI system for Radio Frequency (RF) machine learning applications with expert driven neural explainability of input signals combines three algorithms (A1, A2, and A3). A1 is a neural network that learns to classify spectrograms. During training, A1 learns to map a spectrogram to its paired label. It outputs a label estimate from a spectrogram. Labels account for device number and spectrum utilization. The neural network is built on two-dimensional dilated causal convolutions to account for frequency and time dimensions of spectrogram data. A2 is a user-defined function that converts an input spectrogram into a vector that quantifies human-identifiable elements of the spectrogram. A3 is a random forest feature extraction algorithm. It takes as input the outputs of A2 and A1. From these, A3 learns which elements in the vector output by A2 were most important for choosing the labels output from A1.