To provide a signal processing device, a signal processing system, a signal processing method and a program capable of detecting a large number of AIS signals.SOLUTION: In the signal processing system, a signal processing device 30 installed in an artificial satellite is provided with: a detection unit 32 for detecting a plurality of signals transmitted by a plurality of ships and received by a sparse array antenna 20 including a plurality of antenna elements 21 to 27 mounted on the artificial satellite; an expansion unit 33 for making at least one of the number of antenna arrays in the sparse array antenna, an effective aperture length, and the degree of freedom in array expanded by performing Khatri-Lao product expansion on the signals detected by the detection unit based on position information of the artificial satellite and distribution information of the plurality of ships; and a determination unit 34 for determining a signal detection direction using the signal detected by the detection unit and an assumption signal assumed to be received by a virtual array antenna element in the sparse array antenna.SELECTED DRAWING: Figure 2

    【課題】多数のAIS信号を検出することができる信号処理装置、信号処理システム、信号処理方法及びプログラムを提供する。【解決手段】信号処理システムにおいて、人工衛星が有する信号処理装置30は、複数の船舶によりそれぞれ送信され、人工衛星に搭載された複数のアンテナ素子21〜27を含むスパースアレイアンテナ20によって受信された複数の信号を検出する検出部32と、人工衛星の位置情報と、複数の船舶の分布情報とに基づいて、検出部によって検出された信号に対してカトリ・ラオ積拡張を行うことにより、スパースアレイアンテナにおけるアンテナアレイ数、実行開口長及びアレイ自由度のうち少なくとも1つを拡張させる拡張部33と、検出部によって検出された信号及びスパースアレイアンテナにおける仮想アンテナ素子によって受信されることが想定される想定信号を用いて、信号検知方向を決定する決定部34と、を備える。【選択図】図2


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    Title :

    SIGNAL PROCESSING DEVICE, SIGNAL PROCESSING SYSTEM, SIGNAL PROCESSING METHOD, AND PROGRAM


    Additional title:

    信号処理装置、信号処理システム、信号処理方法、及びプログラム


    Contributors:

    Publication date :

    2021-04-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G01S RADIO DIRECTION-FINDING , Funkpeilung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H01Q Antennen , ANTENNAS, i.e. RADIO AERIALS



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