Code-space optical electronic distance meter
    1.
    发明授权
    Code-space optical electronic distance meter 失效
    代码空间光电子距离计

    公开(公告)号:US6031601A

    公开(公告)日:2000-02-29

    申请号:US112022

    申请日:1998-07-08

    CPC分类号: G01S17/48 G01C15/00 G01S17/32

    摘要: An electronic distance meter comprises an integrated circuit from a GPS navigation receiver having a local pseudo-random number code generator for code demodulation that is connected to modulate either a polychromatic or a monochromatic light source. An optical system focuses the light on a distant target with an unknown range. Reflections from the distant target are focused on a light detector that produces a phase-delayed copy of the original pseudo-random number code. The time-of-flight to and back from the distant target is a function of the distance. The GPS receiver integrated circuit computes the range based on the code-phase delay to a precision better than one centimeter. The position of a remote target can be triangulated from several electronic distance meters each having known positions, e.g., determined by included GPS navigation receivers. Conversely, the position of a single electronic distance meter can be determined by triangulation by ranging to several remote targets each having known positions.

    摘要翻译: 电子距离计包括来自GPS导航接收机的集成电路,该导航接收机具有连接到调制多色或单色光源的用于码解调的局部伪随机数码发生器。 光学系统将光聚焦在远距离的目标上,范围是未知的。 来自遥远目标的反射集中于产生原始伪随机数码的相位延迟拷贝的光检测器。 距离遥远目标的飞行时间是距离的函数。 GPS接收机集成电路将码相延迟的范围计算为精度高于一厘米。 远程目标的位置可以从具有已知位置的几个电子距离测距仪进行三角测量,例如由所包含的GPS导航接收机确定。 相反,单个电子距离计的位置可以通过测距到几个具有已知位置的远程目标的三角测量来确定。

    Location and generation of high accuracy survey control marks using satellites
    2.
    发明授权
    Location and generation of high accuracy survey control marks using satellites 有权
    使用卫星定位和生成高精度测量控制标记

    公开(公告)号:US06304210B1

    公开(公告)日:2001-10-16

    申请号:US09372741

    申请日:1999-08-11

    IPC分类号: G01S504

    摘要: A first position determining device at a known position transmits a data signal identifying the known position. A second position determining device is responsive to the data signal and movable to a position near but displaced from a survey point. The position of the second position determining device is determined relative to the known position, and the range and bearing of the survey point is determined relative to the second position determining device.

    摘要翻译: 已知位置处的第一位置确定装置发送识别已知位置的数据信号。 第二位置确定装置响应于数据信号并且可移动到靠近但从测量点移位的位置。 相对于已知位置确定第二位置确定装置的位置,并且相对于第二位置确定装置确定测量点的范围和方位。

    Lane change alarm for use in a highway vehicle
    3.
    发明授权
    Lane change alarm for use in a highway vehicle 有权
    车道变更报警用于公路车辆

    公开(公告)号:US6107939A

    公开(公告)日:2000-08-22

    申请号:US186473

    申请日:1998-11-05

    申请人: James L. Sorden

    发明人: James L. Sorden

    IPC分类号: G01S7/04 G01S13/93 G08G1/00

    摘要: A lane change alarm using data for a highway track. A highway track database provides geographical location points for a track of a highway lane. A differential global positioning system (DGPS) receiver provides a vehicle location. A longitudinal track matching code matches the vehicle location against a track location and provides a longitudinal direction and a transverse distance to an alarm gate. The alarm gate indicates an alarm condition unless a lane change signaler is operated for indicating that the lane change is intentional. The highway track database is created using a similar DGPS receiver by determining and recording highway track location points for a selected highway lane while driving on the highway lane.

    摘要翻译: 使用公路轨道数据的车道变更报警。 高速公路轨道数据库为公路车道的轨道提供地理位置点。 差分全球定位系统(DGPS)接收机提供车辆位置。 纵向轨道匹配码将车辆位置与轨道位置相匹配,并提供与报警门的纵向方向和横向距离。 报警门指示报警状态,除非操作车道变换信号器以指示车道变化是故意的。 公路轨道数据库使用类似的DGPS接收机通过在公路车道上行驶时确定和记录所选公路车道的公路轨道位置点来创建。

    Event-activated reporting of vehicle location

    公开(公告)号:USRE35920E

    公开(公告)日:1998-10-13

    申请号:US644423

    申请日:1996-05-10

    摘要: Apparatus that is carried on a land vehicle, a marine vehicle or vessel, or an airborne vehicle or vessel for notifying others that a vehicle accident or other abnormal situation has occurred and for notifying others of the location of the vehicle at the time of the accident. The vehicle carries an distance measuring system (DMS) signal antenna and receiver/processor that receives DMS-type signals from one or more DMS signal broadcasters and determines the present position of the vehicle, plus an activatable transmitter. The vehicle also carries an abnormality sensing means that senses the occurrence of an accident or other abnormal situation involving the vehicle or a vehicle occupant. When an abnormal situation is sensed, the abnormality sensing means automatically activates the transmitter, which then communicates the fact that an abnormal situation has occurred and the location of the vehicle at the time the event occurred. Alternatively, the abnormality sensing means can activate the transmitter only after a vehicle operator has taken affirmative action indicating that the transmitter should be activated. Optionally, the transmitter can also communicate the time the event occurred. If the abnormal situation is (1) a vehicle accident, (2) inoperability of the vehicle, (3) inability of the vehicle operator or other vehicle occupant to continue (e.g., because of a rapid change in a present health condition of the occupant), the transmitter can also communicate information on (1) the severity of the accident, (2) the type or cause of vehicle inoperability, (3) the reason the operator or other occupant is unable to continue. Optionally, the system can also transmit, or hold for future analysis, the values of one or more vehicle operating parameters sensed at a sequence of times preceding occurrence of the abnormal situation. The DMS may be a Satellite Positioning System, such as the Global Positioning System (GPS) or the Global Orbiting Navigation System (GLONASS), or a ground-based radionavigation system, such as LORAN, Shoran, Decca or TACAN.

    Location and generation of high accuracy survey control marks using
satellites
    5.
    发明授权
    Location and generation of high accuracy survey control marks using satellites 失效
    使用卫星定位和生成高精度测量控制标记

    公开(公告)号:US5739785A

    公开(公告)日:1998-04-14

    申请号:US587998

    申请日:1996-01-16

    摘要: A method for accurately determining the location of a pre-selected survey or construction mark, or for accurately identifying the survey position for a new mark with pre-selected location coordinates. A Satellite Positioning System (SPS), such as GPS or GLONASS, with at least two SPS stations (antennas and receiver/processors) is used to receive and analyze SPS signals from four or more SPS signal satellites. An SPS signal reference station is placed at a position with known location coordinates, which can be stationary or be known functions of time. An SPS signal roving station receives the location coordinates of the reference station and determines its own location coordinates relative to the reference station, using SPS differential positioning. The roving station is then moved to a pre-selected survey mark or position, either to locate that survey mark or to identify (by marking) a new survey position from pre-selected location coordinates. The reference station analyzes the satellite signals received and transmits this measurement information and the reference station location to the roving station. The roving station independently makes similar measurements using satellites signals it receives. The roving station can contain a data-base of pre-selected positions that are to be located, which may or may not have corresponding physical marks. A handheld survey controller incorporating a visual or audible display is attached to the roving station, which guides the user to one or more of the pre-determined positions. Suitable radio communication apparatus is provided to allow the reference receiver to broadcast information to the roving receiver, even if the roving receiver is not directly visible from the reference receiver.

    摘要翻译: 一种用于准确地确定预先选定的测量或施工标记的位置的方法,或者用于准确地识别具有预先选择的位置坐标的新标记的测量位置。 卫星定位系统(SPS),如GPS或GLONASS,至少有两个SPS站(天线和接收机/处理器)用于接收和分析四个或更多个SPS信号卫星的SPS信号。 SPS信号参考站被放置在具有已知位置坐标的位置,其可以是静止的或已知的时间功能。 SPS信号巡回站接收参考站的位置坐标,并使用SPS差分定位确定其相对于参考站的位置坐标。 然后,将巡回站移动到预选的测量标记或位置,以定位该测量标记,或者从预先选定的位置坐标识别(通过标记)新的测量位置。 参考站分析接收到的卫星信号,并将该测量信息和参考站位置发送到巡回站。 巡回站使用其接收的卫星信号独立进行相似的测量。 巡回站可以包含要被定位的预选位置的数据库,其可以具有也可以不具有相应的物理标记。 包含视觉或听觉显示器的手持式测量控制器附接到流动站,其将用户引导到一个或多个预定位置。 提供合适的无线电通信装置,以允许参考接收机向粗纱接收机广播信息,即使粗纱接收机不能从参考接收机直接看到。

    Event-activated reporting of vehicle location

    公开(公告)号:US5311197A

    公开(公告)日:1994-05-10

    申请号:US011989

    申请日:1993-02-01

    摘要: Apparatus that is carried on a land vehicle, a marine vehicle or vessel, or an airborne vehicle or vessel for notifying others that a vehicle accident or other abnormal situation has occurred and for notifying others of the location of the vehicle at the time of the accident. The vehicle carries an distance measuring system (DMS) signal antenna and receiver/processor that receives DMS-type signals from one or more DMS signal broadcasters and determines the present position of the vehicle, plus an activatable transmitter. The vehicle also carries an abnormality sensing means that senses the occurrence of an accident or other abnormal situation involving the vehicle or a vehicle occupant. When an abnormal situation is sensed, the abnormality sensing means automatically activates the transmitter, which then communicates the fact that an abnormal situation has occurred and the location of the vehicle at the time the event occurred. Alternatively, the abnormality sensing means can activate the transmitter only after a vehicle operator has taken affirmative action indicating that the transmitter should be activated. Optionally, the transmitter can also communicate the time the event occurred. If the abnormal situation is (1) a vehicle accident, (2) inoperability of the vehicle, (3) inability of the vehicle operator or other vehicle occupant to continue (e.g., because of a rapid change in a present health condition of the occupant), the transmitter can also communicate information on (1) the severity of the accident, (2) the type or cause of vehicle inoperability, (3) the reason the operator or other occupant is unable to continue. Optionally, the system can also transmit, or hold for future analysis, the values of one or more vehicle operating parameters sensed at a sequence of times preceding occurrence of the abnormal situation. The DMS may be a Satellite Positioning System, such as the Global Positioning System (GPS) or the Global Orbiting Navigation System (GLONASS), or a ground-based radionavigation system, such as LORAN, Shoran, Decca or TACAN.

    Frequency counter and method
    7.
    发明授权
    Frequency counter and method 失效
    频率计数器和方法

    公开(公告)号:US4150432A

    公开(公告)日:1979-04-17

    申请号:US861805

    申请日:1977-12-19

    申请人: James L. Sorden

    发明人: James L. Sorden

    IPC分类号: G01R23/10 G01R23/02 G06F15/20

    CPC分类号: G01R23/02

    摘要: An averaging frequency counter for determining the frequency of recurrence of input signals has an event counter for counting a number of the input signals, a gate counter for counting a number of time intervals during which the input signals are counted, and a time interval measurement circuit for measuring the cumulative duration of the time intervals. A systematic error associated with the measurement of the duration of each time interval is determined during an application of a calibrated frequency to the averaging frequency counter by dividing a calculated total time error by the number of time intervals. The systematic error is subsequently used to correct a measurement of an unknown frequency during an application of the unknown frequency to the averaging frequency counter by subtracting a product of the number of the time intervals and the systematic error from the cumulative duration.

    摘要翻译: 用于确定输入信号的再现频率的平均频率计数器具有用于对多个输入信号进行计数的事件计数器,用于计数输入信号被计数的时间间隔数的门计数器和时间间隔测量电路 用于测量时间间隔的累积持续时间。 通过将计算出的总时间误差除以时间间隔的数量,在将校准频率应用于平均频率计数器期间确定与每个时间间隔的持续时间的测量相关联的系统误差。 随后,通过从累积持续时间中减去时间间隔数量和系统误差的乘积,将未知频率的未知频率的测量值校正到平均频率计数器中。