公开(公告)号：US4278975A

公开(公告)日：1981-07-14

申请号：US4533

申请日：1979-01-18

申请人： Yoshinori Kimura ,  Masuki Sunayama ,  Yoshiki Okamoto

发明人： Yoshinori Kimura ,  Masuki Sunayama ,  Yoshiki Okamoto

IPC分类号： G01S5/14 ,  G01S13/74 ,  G01S13/76 ,  G01S13/87 ,  G01S13/91

CPC分类号： G01S13/765 ,  G01S5/14

摘要： A navigation-monitoring apparatus comprises a fixed ground station sending forth an interrogation signal to a ship and a transponder carried on the ship and transmitting a reply signal to the fixed ground station in response to the interrogation signal. A microwave sensor carried on the ship measures the distance between the ship and the nearest bank. Data on the measured distance is added to a reply signal sent forth from the ship to the fixed ground station. The fixed ground station measures an interval between a point of time at which the interrogation signal was issued and a point of time at which a reply signal from the ship was received, thereby defining the position of the ship from said time interval and data on the ship-to-bank distance.

摘要翻译： 导航监视装置包括固定地面站，向船上发送询问信号和承载在船上的应答器，并响应于询问信号向固定地面站发送应答信号。 船上携带的微波传感器测量船舶与最近的岸线之间的距离。 将测量距离的数据添加到从船舶发送到固定地面站的应答信号。 固定地面站测量发出询问信号的时间点和接收到来自船舶的回复信号的时间点之间的时间间隔，从而从所述时间间隔定义船舶的位置，并且在 船到岸距离。