公开(公告)号：US4983980A

公开(公告)日：1991-01-08

申请号：US549514

申请日：1990-07-06

Applicant: Hitoshi Ando

Inventor： Hitoshi Ando

IPC: G01C21/00 ,  G01S1/00 ,  G01S19/24

CPC classification number: G01S19/28

Abstract: A vehicle-mounted GPS receiver for positioning and reckoning being capable of tracking satellite signals without serious interruption when passing through a dead zone such as a tunnel by quick recapturing of satellite signals after the vehicle has cleared the dead zone, wherein the GPS receiver determines, by calculation, one GPS satellite which is at the maximum elevation angle among the GPS satellites at the very moment if the satellite signals have interrupted simultaneously over a specified period of time, and starts to track the determined GPS satellite as soon as the vehicle clears the dead zone, whereas the GPS receiver calculates orbital positions of other GPS satellites required for positioning, two dimensional or three dimensional, based on the orbital position of the GPS satellite which is at the highest elevation angle, further, when the GPS receiver has a plurality of receiving channels, a plurality of GPS satellites are assigned, one by one, to the plurality of receiving channels from the highest elevation angle in due order for reducing the time in recapture.

公开(公告)号：US4890233A

公开(公告)日：1989-12-26

申请号：US113109

申请日：1987-10-27

Applicant: Hitoshi Ando ,  Takashi Kashiwazaki ,  Masayuki Hosoi ,  Atsuhiko Fukushima

Inventor： Hitoshi Ando ,  Takashi Kashiwazaki ,  Masayuki Hosoi ,  Atsuhiko Fukushima

IPC: G01C21/08 ,  G01C21/28 ,  G09B29/10

CPC classification number: G01C21/28 ,  G01C21/08 ,  G09B29/106

Abstract: The invention provides various methods for detecting the bearing of a moving vehicle and of processing data in a vehicular navigation system. Provided there is carried out a process of recognizing the present position of the vehicle while the vehicle is moving at a predetermined speed, bearing data obtained from a prestored map is utilized to determine the present position of the vehicle. At that time, the data output from a terrestrial magnetism sensor, which would otherwise be used, is discarded.

Abstract translation: 本发明提供了用于检测移动车辆的轴承和在车辆导航系统中处理数据的各种方法。 如果在车辆以预定速度移动的情况下进行识别车辆的当前位置的处理，则利用从预先存储的地图获得的承载数据来确定车辆的当前位置。 此时，从地磁传感器输出的数据，否则将被使用。

公开(公告)号：US4837700A

公开(公告)日：1989-06-06

申请号：US112918

申请日：1987-10-27

Applicant: Hitoshi Ando ,  Takashi Kashiwazaki ,  Masayuki Hosoi ,  Atsuhiko Fukushima

Inventor： Hitoshi Ando ,  Takashi Kashiwazaki ,  Masayuki Hosoi ,  Atsuhiko Fukushima

IPC: G01C21/28 ,  G01S5/14 ,  G01S19/48

CPC classification number: G01C21/28

Abstract: A method for processing data received by a receiving device which outputs present location data for a movable vehicle based on the Global Positioning System and is positioned in the vehicle, including the steps of calculating an average of a predetermined number of data output from the receiving device while the vehicle stops, determining the average to be an effective data if the standard deviation of the data is within a predetermined range, and processing the averaged data as the present location data for the vehicle.

Abstract translation: 一种用于处理由接收装置接收的数据的方法，该接收装置基于全球定位系统输出可移动车辆的当前位置数据并将其定位在车辆中，包括以下步骤：计算从接收装置输出的预定数量的数据的平均值 当车辆停止时，如果数据的标准偏差在预定范围内，则将平均值确定为有效数据，并且将平均数据作为车辆的当前位置数据进行处理。