公开(公告)号：US06268804B1

公开(公告)日：2001-07-31

申请号：US09523830

申请日：2000-03-13

Applicant: James M. Janky ,  Derek Steven Smith ,  John F. Schipper

Inventor： James M. Janky ,  Derek Steven Smith ,  John F. Schipper

IPC: G08G116

CPC classification number: G01S15/931 ,  B60T2201/08 ,  B60T2201/081 ,  G01S5/0072 ,  G01S13/931 ,  G01S19/48 ,  G01S2013/9325 ,  G01S2013/9346 ,  G01S2013/9353 ,  G01S2013/9357 ,  G01S2013/936 ,  G01S2013/9367 ,  G01S2013/9385 ,  G08G1/164 ,  G08G1/166 ,  Y10S367/909

Abstract: A system for monitoring operation and location of a first moving vehicle relative to a second moving vehicle. A minimum separation distance between the first and second vehicles is estimated, based on the first vehicle velocity, and optionally on the second vehicle velocity, using location determination (LD) signals received from satellite-based transmitters from GPS, GLONASS and LEO satellites, or from ground-based signal sources such as LORAN signal towers, and using ranging signals from SONAR, RADAR or a similar system. The minimum separation distance is compared with the actual separation distance at selected times, and a vehicle driver is advised if the actual separation distance is too small, if the separation distance is decreasing too quickly, or if the second vehicle velocity is decreasing too quickly. The second vehicle may travel in the same traffic lane, in an adjacent lane, or on a road that intersects the road used by the first vehicle. Where the first and second vehicles travel on separate roads that will intersect, the system estimates whether the second vehicle will stop, or will be able to stop, at the intersection. The second vehicle may be a railroad car, such as a locomotive, or a road vehicle. A maximum vehicle clear-view velocity, consistent with vehicle stopping within a selected distance, is estimated. Road conditions are estimated and compensated for in estimating the minimum separation distance and/or the maximum vehicle clear-view velocity.

Abstract translation: 一种用于监测第一移动车辆相对于第二移动车辆的操作和位置的系统。 使用从GPS，GLONASS和LEO卫星的基于卫星的发射器接收的位置确定（LD）信号，基于第一车辆速度，并且可选地基于第二车辆速度来估计第一和第二车辆之间的最小间隔距离，或 来自诸如LORAN信号塔的地面信号源，以及使用来自SONAR，RADAR或类似系统的测距信号。 将最小间隔距离与选定时间的实际间隔距离进行比较，如果实际分隔距离太小，则间隔距离过小，或第二车速下降过快时，建议车辆驾驶员。 第二辆车可以在相同的行车道，相邻的车道，或与第一车辆使用的道路相交的道路上行驶。 在第一和第二车辆在相交的不同道路上行驶的情况下，系统估计第二辆车是否将在交叉路口停下或将能够停下来。 第二车辆可以是铁路车辆，例如机车或道路车辆。 估计与选定距离内的车辆停止一致的最大车辆清视速度。 在估计最小间隔距离和/或最大车辆清除速度时估计和补偿道路条件。

公开(公告)号：US6067031A

公开(公告)日：2000-05-23

申请号：US993693

申请日：1997-12-18

Applicant: James M. Janky ,  Derek Steven Smith ,  John F. Schipper

Inventor： James M. Janky ,  Derek Steven Smith ,  John F. Schipper

IPC: G01S5/00 ,  G01S5/14 ,  G01S15/93 ,  G01S19/48 ,  G08G1/16

CPC classification number: G01S15/931 ,  G01S13/931 ,  G01S5/0072 ,  G08G1/164 ,  G08G1/166 ,  B60T2201/08 ,  B60T2201/081 ,  G01S19/48 ,  G01S2013/9325 ,  G01S2013/9346 ,  G01S2013/9353 ,  G01S2013/9357 ,  G01S2013/936 ,  G01S2013/9367 ,  G01S2013/9385 ,  Y10S367/909

Abstract: A system for monitoring operation and location of a moving first vehicle relative to a second vehicle. A minimum separation distance between the first and second vehicles is estimated, based on the first vehicle velocity, and optionally on the second vehicle velocity, using location determination (LD) signals received from satellite-based transmitters from GPS, GLONASS and LEO satellites, or from ground-based signal sources such as LORAN signal towers, and using ranging signals from SONAR, RADAR or a similar system. The minimum separation distance is compared with the actual separation distance at selected times, and a vehicle driver is advised if the actual separation distance is too small, if the separation distance is decreasing too quickly, or if the second vehicle velocity is decreasing too quickly. The second vehicle may travel in the same traffic lane, in an adjacent lane, or on a road that intersects the road used by the first vehicle. Where the first and second vehicles travel on separate roads that will intersect, the system estimates whether the second vehicle will stop, or will be able to stop, at the intersection. The second vehicle may be a railroad car, such as a locomotive, or a road vehicle, such as an automobile, bus or truck. A maximum vehicle clear-view velocity, consistent with vehicle stopping within a selected distance, is estimated. Road conditions are estimated and compensated for in estimating the minimum separation distance and/or the maximum vehicle clear-view velocity.

Abstract translation: 一种用于监测运动的第一车辆相对于第二车辆的操作和位置的系统。 使用从GPS，GLONASS和LEO卫星的基于卫星的发射器接收的位置确定（LD）信号，基于第一车辆速度，并且可选地基于第二车辆速度来估计第一和第二车辆之间的最小间隔距离， 来自诸如LORAN信号塔的地面信号源，以及使用来自SONAR，RADAR或类似系统的测距信号。 将最小间隔距离与选定时间的实际间隔距离进行比较，如果实际分隔距离太小，则间隔距离过小，或第二车速下降过快时，建议车辆驾驶员。 第二辆车可以在相同的行车道，相邻的车道，或与第一车辆使用的道路相交的道路上行驶。 在第一和第二车辆在相交的不同道路上行驶的情况下，系统估计第二辆车是否将在交叉路口停下或将能够停下来。 第二车辆可以是铁路车辆，例如机车，或诸如汽车，公共汽车或卡车的公路车辆。 估计与选定距离内的车辆停止一致的最大车辆清视速度。 在估计最小间隔距离和/或最大车辆清除速度时估计和补偿道路条件。

公开(公告)号：US5936573A

公开(公告)日：1999-08-10

申请号：US888760

申请日：1997-07-07

Applicant: Derek Steven Smith

Inventor： Derek Steven Smith

IPC: G01S1/00 ,  G01S5/14 ,  G01S19/04 ,  G01S19/10 ,  G01S19/44 ,  G01S19/46 ,  G01S5/02 ,  H04B7/185

CPC classification number: G01S19/20 ,  G01S19/41 ,  G01S19/44

Abstract: A first receiver computes its position using data from sources chosen according to conditions at a second receiver and reference data. The computed position is compared with a known position. The data may be GPS positioning data from satellites and/or pseudolites and the reference data may be RTK GPS data provided by an RTK GPS reference station. The conditions at the second receiver generally correspond to satellite constellations and other parameters and the position of the first receiver may be computed by configuring the first receiver to mimic the conditions at the second receiver. The comparison of the computed position to the known position may result in an error measurement which may be used to initiate an alert condition. In a further embodiment, a receiver has first circuitry configured to compute its position using data from sources chosen according conditions at a remote receiver and reference data. The receiver may further include second circuitry for comparing the computed position with a known position. The first circuitry may include a GPS engine which is configured to compute the position from GPS data derived from GPS satellites and/or pseudolites. In yet another embodiment, a system includes a first unit and a second unit, the second unit being configured to compute its position using data from sources chosen according to conditions at the first unit and reference data. The system may also include a reference unit configured to provide RTK GPS reference data to the second unit.

Abstract translation: 第一接收机使用根据第二接收机和参考数据条件选择的源的数据来计算其位置。 将计算出的位置与已知位置进行比较。 数据可以是来自卫星和/或伪卫星的GPS定位数据，并且参考数据可以是由RTK GPS参考站提供的RTK GPS数据。 第二接收机的条件通常对应于卫星星座和其他参数，并且可以通过配置第一接收机来模拟第二接收机的条件来计算第一接收机的位置。 计算的位置与已知位置的比较可能导致可用于启动警报条件的错误测量。 在另一个实施例中，接收机具有第一电路，其被配置为使用来自根据在远程接收机处的条件选择的源的数据和参考数据来计算其位置。 接收机还可以包括用于将计算出的位置与已知位置进行比较的第二电路。 第一电路可以包括GPS引擎，其被配置为从GPS卫星和/或伪卫星导出的GPS数据计算位置。 在另一个实施例中，系统包括第一单元和第二单元，第二单元被配置为使用根据在第一单元处的条件和参考数据选择的源的数据来计算其位置。 该系统还可以包括被配置为向第二单元提供RTK GPS参考数据的参考单元。