CA LIN/CFAR回路を改良したワイブルCFAR回路によるターゲットの検出

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2019/11/01

タイトル(英語): Detection of Target by Means of Weibull/CFAR Circuit Modified CA LIN/CFAR Circuit

著者名: 佐山　周次（防衛大学校通信工学科）

著者名(英語): Shuji Sayama (Department of Communications Engineering, National Defense Academy)

キーワード: Sバンドレーダ，シークラッタ，一定誤警報率，ワイブル分布　　S-band radar，sea clutter，CFAR，Weibull distribution

要約(英語): I have observed sea clutter containing a target (ship) using an S-band radar with a frequency of 3.05GHz, a beamwidth of 1.8°, a pulsewidth of 0.5μs, and a pulse-repetition frequency of 1,600Hz. To investigate the sea clutter amplitude statistics, I use partial Q-Q plot. I have found that the sea clutter amplitudes obey the Weibull distribution with the shape parameter of c=3.18 for entire data and the Weibull and log-Weibull distributions with the shape parameters of c=3.05 to 4.36 and c=11.84 to 11.95, respectively, for data within the beam width of an antenna. The number of the largest log-likelihood of the Weibull and log-Weibull distributions to data are 9 and 2, respectively, from 11 range sweep numbers. I have used the Weibull/CFAR (Constant False Alarm Rate) circuit which is modified a Cell-Averaging (CA) LIN/CFAR circuit. It is found that ship is detected and sea clutter is suppressed with improvement of 40.82dB by Weibull/CFAR.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.139 No.11 （2019） 特集Ⅰ：電気電子工学関連分野における教育フロンティア　特集Ⅱ：イノベーションを創出する最新の計測技術2019

本誌掲載ページ: 610-617 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/139/11/139_610/_article/-char/ja/