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2. 发明申请

WO1995020249A1 SATELLITE-BROADCAST RECEIVING MOBILE ANTENNA APPARATUS 审中-公开
标题翻译：卫星广播接收移动天线装置
公开(公告)号：WO1995020249A1
公开(公告)日：1995-07-27
申请号：PCT/JP1995000047
申请日：1995-01-19
申请人： NIPPON STEEL CORPORATION , SYSTEM UNIQUES CORPORATION , UEMATSU, Masahiro , MORIYA, Motonobu , OCHIAI, Makoto , KATO, Kazuo , OJIMA, Takashi
发明人： NIPPON STEEL CORPORATION , SYSTEM UNIQUES CORPORATION
IPC分类号： H01Q01/32
CPC分类号： H01Q1/3275 , H01Q3/04
摘要： The tracking control apparatus (20) for a mobile-type satellite-broadcast receiving antenna which is installed on mobile body detects the level of a radio wave received by the antenna (AT), and repeatedly rotating, on the basis of this detected received signal level, the antenna over a certain angle at higher rotation velocity as increment of the received signal level per unit angle associated with the preceding rotation becomes larger, thereby controlling the rotation angle of the antenna (100). Within a period in which the received signal level is larger than a threshold, the rotation angle of the antenna is held at the current value and the received signal level is monitored (200). When the received signal level is reduced to be less than the threshold, the angular velocity of the mobile body and its integrated value are detected (7, 8), and if either one of the values is significant, the angular error in the turning operation of the mobile body is regarded as having increased, and the antenna is controlled for its rotation angle (100). If both the values are not significant, the increase of the angular error is considered as having been suddenly caused by an obstacle, and the control apparatus waits for the received signal level to be restored to a proper value (300).
摘要翻译：用于安装在移动体上的移动式卫星广播接收天线的跟踪控制装置（20）根据该检测到的接收信号来检测由天线（AT）接收到的无线电波的水平，并反复旋转在与先前旋转相关联的每单位角度的接收信号电平的增加量增大时，天线以更高的旋转速度在一定角度上变大，从而控制天线（100）的旋转角度。在接收信号电平大于阈值的时段内，天线的旋转角度被保持在当前值，监视接收信号电平（200）。当接收到的信号电平减小到小于阈值时，检测到移动体的角速度及其积分值（7,8），如果任何一个值都有效，则转向操作中的角度误差视为具有增加的移动体，并且天线被控制为其旋转角度（100）。如果这两个值都不重要，则角度误差的增加被认为是由障碍物突然引起的，并且控制装置等待接收到的信号电平恢复到适当的值（300）。

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