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公开(公告)号：US20170343678A1
公开(公告)日：2017-11-30
申请号：US15607307
申请日：2017-05-26
Applicant: JAVAD GNSS, Inc.
Inventor： Javad ASHJAEE
Abstract: Embodiments of the present disclosure relate to a magnetic locator for a GNSS device. The magnetic locator includes a magnetic field sensor configured to detect a magnetic field adjacent the magnetic locator; a controller coupled to the magnetic field sensor and configured to receive from the magnetic field sensor measurement data based on the magnetic field and calculate sensor data based on the received measurement data; a communication interface coupled to the controller and adaptable to transmit sensor data received from the controller to the GNSS device; a connector adaptable to connect the magnetic locator to a GNSS antenna of the GNSS device; and a housing.
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公开(公告)号：US20170219715A1
公开(公告)日：2017-08-03
申请号：US15418474
申请日：2017-01-27
Applicant: JAVAD GNSS, Inc.
Inventor： Javad ASHJAEE
CPC classification number: G01S19/43 , G01S19/05 , G01S19/09 , G01S19/258 , G01S19/40 , G01S19/41 , G01S19/426
Abstract: A GNSS device includes an antenna configured to receive a first plurality of GNSS signals from a first plurality of GNSS satellites and a second plurality of GNSS signals from a second plurality of GNSS satellites. The GNSS device also includes a communications interface configured to receive correction signals from a GNSS base unit. A processor of the GNSS device is coupled to the antenna and communications interface for processing data from the first plurality of GNSS signals and the second plurality of GNSS signals. Memory of the GNSS deice includes executable instructions for several steps. A first algorithm is executed to determine first position data for the GNSS device based on the first plurality of GNSS signals and a correction signal received at the GNSS device from the GNSS base unit. The first position data is stored memory of the GNSS device. A second algorithm is executed to determine second position data for the GNSS device based on the second plurality of GNSS signals. In response to the second algorithm failing to determine the second position data, GNSS signal data is stored in memory of the GNSS device. The GNSS signal data is based on the second plurality of GNSS signals. The GNSS signal data are transmitted to an external device.
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公开(公告)号：US20160178369A1
公开(公告)日：2016-06-23
申请号：US14975181
申请日：2015-12-18
Applicant: JAVAD GNSS, Inc.
Inventor： Javad ASHJAEE
Abstract: Documenting the two-dimensional tilt of a GNSS device includes focusing an image sensor on a location of a level having an appearance that indicates the two-dimensional tilt of the GNSS device. A first image of a scene is captured with the image sensor. The first image includes the level. A portion of the first image is displayed and includes the level on a display of the GNSS device. Position information for the GNSS device is also displayed on the display.
Abstract translation: 记录GNSS设备的二维倾斜包括将图像传感器聚焦在具有指示GNSS设备的二维倾斜的外观的水平位置。 用图像传感器捕获场景的第一个图像。 第一个图像包括水平。 显示第一图像的一部分，并且包括GNSS装置的显示器上的电平。 GNSS设备的位置信息也显示在显示屏上。
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公开(公告)号：US20130113571A1
公开(公告)日：2013-05-09
申请号：US13672329
申请日：2012-11-08
Applicant: JAVAD GNSS, Inc.
Inventor： Javad ASHJAEE , Dmitry Dubrovsky
IPC: H03F3/191
Abstract: A low-noise amplifier (LNA) filter for use with global navigation satellite system (GNSS) devices is disclosed. A first LNA stage, which is configured to connect to an antenna configured to receive GNSS signals, includes an LNA. A second LNA stage, which is connected to the output of the first LNA stage, has a surface acoustic wave (SAW) filter and an LNA. A third LNA stage, which is connected to the output of the second LNA stage, also has a SAW filter and an LNA.
Abstract translation: 公开了一种用于全球导航卫星系统（GNSS）设备的低噪声放大器（LNA）滤波器。 配置为连接到被配置为接收GNSS信号的天线的第一LNA级包括LNA。 连接到第一LNA级的输出的第二LNA级具有表面声波（SAW）滤波器和LNA。 连接到第二LNA级的输出的第三LNA级还具有SAW滤波器和LNA。
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公开(公告)号：US20230251088A1
公开(公告)日：2023-08-10
申请号：US18297474
申请日：2023-04-07
Applicant: Javad GNSS, Inc.
Inventor： Javad ASHJAEE
CPC classification number: G01C11/02 , G01C11/00 , G01C15/02 , G01S19/07 , G01S19/12 , G01S19/26 , G01S19/51 , G01S19/235
Abstract: A method of calibrating a total station using a GNSS device includes physically coupling the total station with the GNSS device at a first location; determining the position of the total station at the first location based on position data received by the GNSS device; decoupling the total station from the GNSS device; moving the GNSS device to a second location while leaving the total station at the first location; determining the position of the GNSS device at the second location based on position data received by the GNSS device; adjusting the position of a camera on the total station to image the GNSS device while at the second location; determining axes of the camera based on the orientation of the camera and the determined positions at the first and second locations; and calibrating encoders of the total station based on the determined axes.
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Patent Agency Ranking
公开(公告)号：US20210325542A1
公开(公告)日：2021-10-21
申请号：US17235656
申请日：2021-04-20
Applicant: Javad GNSS, Inc.
Inventor： Javad ASHJAEE
Abstract: An exemplary method of calculating a position of a GNSS device (e.g., a GNSS rover device) comprises: at the GNSS device in an enhanced real-time kinematic (RTK) mode: receiving a first set of GNSS data corresponding to a first epoch; storing the first set of GNSS data in a buffer; receiving a second set of GNSS data corresponding to a second epoch that is after the first epoch; after receiving the second set of GNSS data, retrieving the first set of GNSS data from the buffer; and calculating the position of the GNSS device based on the retrieved first set of GNSS data and the second set of GNSS data.
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公开(公告)号：US20210123733A1
公开(公告)日：2021-04-29
申请号：US17039337
申请日：2020-09-30
Applicant: Javad GNSS, Inc
Inventor： Javad ASHJAEE
Abstract: A surveying system includes a first subsystem having a GNSS base station and an optical base station. The optical base station includes an optical sensor, a laser module, and one or more motors configured to reposition the optical sensor. The GNSS base station and the optical base station are configured to be coupleable in a first predefined configuration. The system further includes a second subsystem comprising a GNSS rover communicatively coupled to the GNSS base station and an optical rover comprising a visual pattern. The GNSS rover and the optical rover are configured to be coupleable in a second predefined configuration.
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公开(公告)号：US20190154839A1
公开(公告)日：2019-05-23
申请号：US16195589
申请日：2018-11-19
Applicant: JAVAD GNSS, INC.
Inventor： Javad ASHJAEE
Abstract: Systems and methods for performing spoofing detection and rejection including receiving, at a Global Navigation Satellite System (GNSS) device having an antenna, a set of signals, identifying a questionable signal in the set of signals, and in accordance with a determination that the set of signals includes a subset of valid GNSS satellite signals, where the subset satisfies a minimum number of valid GNSS satellite signals and does not include the questionable signal, calculating an approximate position of the GNSS device based on the subset of valid GNSS satellite signals.
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公开(公告)号：US20180045834A1
公开(公告)日：2018-02-15
申请号：US15673124
申请日：2017-08-09
Applicant: JAVAD GNSS, Inc.
Inventor： Javad ASHJAEE
IPC: G01S19/42
Abstract: A handheld GNSS device having a GNSS antenna, memory, and a display receives a first GNSS signal at the GNSS antenna and determines a first position of a point of interest based on the GNSS signal. The first position is stored in memory. A second GNSS signal is received at the GNSS antenna and a second position of the point of interest is determined based on the second GNSS signal. The second position is stored in memory. A third GNSS signal is received at the GNSS antenna and a third position of the point of interest is determined based on the third GNSS signal. The third position is stored in memory. A determination is made whether the first, second, and third positions meet a clustering criteria. In accordance with a determination that the first, second, and third positions meet the clustering criteria, a first cluster position is stored. The first cluster position is based on the first, second, and third positions. In accordance with a determination that the first and second positions meet the clustering criteria and the third position does not meet the clustering criteria, a second cluster position is stored. The second cluster position is based on the first and second and not the third position.
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公开(公告)号：US20160018530A1
公开(公告)日：2016-01-21
申请号：US14802895
申请日：2015-07-17
Applicant: JAVAD GNSS, Inc.
Inventor： Javad ASHJAEE
IPC: G01S19/44
CPC classification number: G01S19/44 , G01S19/426 , G01S19/428 , G01S19/43
Abstract: Systems and methods for performing land surveying using real-time kinematic (RTK) engine verification are provided. In one example, a first set of positions of a GNSS receiver may be determined using each of a plurality of RTK engines. If a number of the plurality of RTK engines that produce a fixed solution is greater than or equal to a threshold value, a position of the GNSS receiver may be determined based on at least a portion of the first set of positions. The determined position may then be stored. This process may be repeated any number of times to produce a desired number of stored positions. In response to the number of stored positions being equal to a minimum value, a final position of the GNSS device may be determined based on the stored positions.
Abstract translation: 提供了使用实时运动学（RTK）引擎验证进行土地测量的系统和方法。 在一个示例中，可以使用多个RTK引擎中的每一个确定GNSS接收器的第一组位置。 如果产生固定解的多个RTK引擎的数量大于或等于阈值，则可以基于第一组位置的至少一部分来确定GNSS接收器的位置。 然后可以存储确定的位置。 该过程可以重复任意次数以产生所需数量的存储位置。 响应于存储位置的数量等于最小值，可以基于存储的位置来确定GNSS设备的最终位置。
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