Electronics and Telecommunications Research Institute

Kang Hee Kim

Ki Cheol Tae

Byung Chan Kim

Haeng Sook Ro

Gwang Moon Park

Soo Ho Sohn

Yong Seok Choi

Sang Won Kim

Chung Sup Kim

Heung Yong Kang

A directive direction finding apparatus may comprise: a directivity-enabled antenna array in which a constituent antenna or antenna subarray has directivity in the same direction; an RF/IF receiver connected to the directivity-enabled antenna array; a digital receiver connected to the RF/IF receiver; a direction finder connected to the digital receiver; a directivity control unit to control an operation of the directivity-enabled antenna array; and a transport/control interface connected to the direction finder and to manage control and operation of the directivity-enabled antenna array, the RF/IF receiver, the digital receiver, the direction finder and the directive control unit.

Method and apparatus for the directive direction finding

In the present invention, in classifying modulation types of a plurality of modulation signals by using a classifier (an artificial neural network model based on machine learning), the classifier may classify the modulation types of the modulation signals by using pieces of I/Q data, sampled with one sampling frequency, as input data, and thus, may quickly classify the modulation signals.

Method of determining single sampling frequency of classification target signal in order to predict modulation type of classification target signal, and method and apparatus for predicting modulation type by using classification target signal sampled with single sampling frequency

Provided herein is a method and apparatus for realizing a frequency-spatial filter with variable bandwidth, the method including generating M number of FFT channel blocks having N number of channels by performing an N point FFT (Fast Fourier Transform) processing using M number of array antenna inputs; combining some of the N number of channels of each FFT channel block according to a frequency bandwidth variable parameter value; combining some of spatial response vector channels in a combined channel of each FFT channel block according to a spatial bandwidth variable parameter value; and combining all the channels and outputting the same.

Method and apparatus for designing frequency-spatial filter with variable bandwidth

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Daejeon, South Korea

Kang Hee Kim