Research of the navigation support system with AIS and Doppler radars

AIS与多普勒雷达导航支持系统研究

• 批准号: 15560690
• 负责人: FUJISAKA Takahiko
• 金额: $ 1.6万
• 依托单位: Tokyo University of Marine Science and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-15560690/
• 关键词: AIS; Marine Radar; Coherent Radar; Remote Information Sensing; Pulse Doppler Radar

The following results were obtained in this research.(1)The resolution of the ISAR (Inverse Synthetic Aperture Radar) images was estimated through the rotational and translational motion data collected in the Tokyo Bay, on board the training ship Shioji Maru during July, 2004. As result, it was shown that the identification of a ship was possible using the ISAR images. First, was clarified the relationship between the cross-range resolution of the ISAR image and the change of the pitch angle of the vessel. Then, was show that the resolution of ISAR images was 0.5mk〜2.0m.(2)The image of a ship obtained by the marine radar is not necessarily corresponding to its true shape because of multiple reflections and scintillation. Therefore, the estimation of the ship's shape and its aspect from the radar image are difficult at present. In this paper, a method to estimate the ship's shape by means of the integration of the radar images is proposed. According to the proposed method, the aspect angle of the ship can be estimated with 5 degrees error and the length of the ship can be estimated with 40m error.

本研究取得了以下成果。（1）利用2004年7月在东京湾训练船Shioji Maru上采集的旋转和平移运动数据，估算了ISAR（Inverse Synthetic Aperture Radar）图像的分辨率。结果表明，利用ISAR图像可以识别船舶。首先，阐明了舰船俯仰角变化与ISAR图像横向分辨率的关系。结果表明，ISAR图像的分辨率为0.5 × 10 ~ 2.0m。（2）由于多次反射和闪烁的影响，船用雷达获得的舰船图像不一定与真实的舰船形状相对应。因此，从雷达图像中估计舰船的形状和方位是目前的难点。本文提出了一种利用雷达图像积分的方法来估计船舶的形状。根据该方法，可以估计的船舶的方位角与5度的误差和船舶的长度估计与40米的误差。

项目成果

レーダ映像の合成による形状推定に関する研究

结合雷达图像的形状估计研究

• 发表时间: 2006
• 期刊: 日本航海学会論文集 第114号
• 作者: 石渡隼也;藤坂貴彦;今津隼馬
• 通讯作者: 今津隼馬

Study of estimating shape by integrating radar images

雷达图像融合估计形状的研究

• 发表时间: 2006
• 期刊: The journal of JAPAN INSTITUTE of NAVIGATION vol.114
• 作者: J.ISHIWATA;T.FUJISAKA;H.IMAZU
• 通讯作者: H.IMAZU

藤坂貴彦: "AISとレーダとの目標統合簡略化のための舶用レーダのコヒーレント化について"AISセミナー「AISの現状と展望」. 3-1-3-7 (2004)

Takahiko Fujisaka：“关于使海洋雷达相干以简化 AIS 和雷达之间的目标集成”AIS 研讨会“AIS 的现状和前景”3-1-3-7 (2004)。

船舶監視におけるISAR画像の分解能

船舶监测中ISAR图像的分辨率

• 发表时间: 2005
• 期刊: 日本航海学会論文集 第113号
• 作者: 藤坂貴彦;今津隼馬
• 通讯作者: 今津隼馬

Cross range resolution of ISAR images in monitoring ships

监测船ISAR图像横向分辨率

• 发表时间: 2005
• 期刊: The journal of JAPAN INSTITUTE of NAVIGATION vol.113
• 作者: T.FUJISAKA;H.IMAZU
• 通讯作者: H.IMAZU