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公开(公告)号：US20210239846A1
公开(公告)日：2021-08-05
申请号：US17259332
申请日：2019-07-11
发明人： Seiji Yoshida , Masakatsu Fujiwara
摘要： A navigation satellite system reception apparatus includes a navigation satellite signal reception unit that calculates a first reception position, and a control unit that calculates an initial value of the first reception position and an orbit position of each of four or more navigation satellites, calculates, based on the calculated first reception position, the calculated orbit position, and time information from the first navigation satellite signals, arrival time of each of the first navigation satellite signals, extracts, based on the calculated arrival time, a second navigation satellite signal, calculates, based on the extracted second navigation satellite signal, a second reception position, recursively performs, by using the calculated second reception position, a calculation process of the arrival time and an extraction process of the second navigation satellite signal, and performs, based on a second navigation satellite signal extracted at end of recursive processing, the positioning process or the time synchronization process.
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2.发明公开公开(公告)号：US20230251388A1
公开(公告)日：2023-08-10
申请号：US18118503
申请日：2023-03-07
发明人： Seiji Yoshida , Masakatsu Fujiwara
摘要： A navigation satellite system reception apparatus including a satellite orbit information acquisition unit that acquires orbit information of a navigation satellite, an installation position information acquisition unit that acquires position information of an installation position, an azimuth meter that acquires azimuth information of an azimuth in which a wall surface of a nearby obstruction extends, and an azimuth mask generation unit that calculates a mask region for selecting a navigation satellite to be a target of processing based on the azimuth information. A positioning and time synchronization processing unit calculates an azimuth and an angle of elevation of each navigation satellite based on the orbit information and the position information, selects a navigation satellite to be a target of processing, and performs at least one of the positioning processing or the time synchronization processing based on a received navigation satellite signal.
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公开(公告)号：US11802975B2
公开(公告)日：2023-10-31
申请号：US17259332
申请日：2019-07-11
发明人： Seiji Yoshida , Masakatsu Fujiwara
摘要： A navigation satellite system reception apparatus includes a navigation satellite signal reception unit that calculates a first reception position, and a control unit that calculates an initial value of the first reception position and an orbit position of each of four or more navigation satellites, calculates, based on the calculated first reception position, the calculated orbit position, and time information from the first navigation satellite signals, arrival time of each of the first navigation satellite signals, extracts, based on the calculated arrival time, a second navigation satellite signal, calculates, based on the extracted second navigation satellite signal, a second reception position, recursively performs, by using the calculated second reception position, a calculation process of the arrival time and an extraction process of the second navigation satellite signal, and performs, based on a second navigation satellite signal extracted at end of recursive processing, the positioning process or the time synchronization process.
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公开(公告)号：US20210286087A1
公开(公告)日：2021-09-16
申请号：US17257922
申请日：2019-07-11
发明人： Seiji Yoshida , Masakatsu Fujiwara
摘要： A navigation satellite system reception apparatus including a satellite orbit information acquisition unit that acquires orbit information of a navigation satellite, an installation position information acquisition unit that acquires position information of an installation position, an azimuth meter that acquires azimuth information of an azimuth in which a wall surface of a nearby obstruction extends, and an azimuth mask generation unit that calculates a mask region for selecting a navigation satellite to be a target of processing based on the azimuth information. A positioning and time synchronization processing unit calculates an azimuth and an angle of elevation of each navigation satellite based on the orbit information and the position information, selects a navigation satellite to be a target of processing, and performs at least one of the positioning processing or the time synchronization processing based on a received navigation satellite signal.
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公开(公告)号：US12078733B2
公开(公告)日：2024-09-03
申请号：US18118503
申请日：2023-03-07
发明人： Seiji Yoshida , Masakatsu Fujiwara
摘要： A navigation satellite system reception apparatus can eliminate multipath signals without direct waves of invisible satellites and can implement time synchronization. A satellite orbit information acquisition unit acquires orbit information of a satellite, an installation position information acquisition unit acquires position information of an installation position, an azimuth meter acquires azimuth information of an azimuth in which a wall surface of a nearby obstruction extends, and an azimuth mask generation unit calculates a mask region for selecting a satellite to be a target of processing based on the azimuth information. A positioning and time synchronization processing unit calculates an azimuth and an angle of elevation of each satellite, selects a satellite to be a target of processing bas, and performs the positioning processing or the time synchronization processing based on a satellite signal received from the selected satellite.
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