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    • 4. 发明授权
    • Integrated SATPS total survey station
    • 综合SATPS总测量站
    • US06369755B1
    • 2002-04-09
    • US08963011
    • 1997-11-03
    • Mark NicholsNicholas C. Talbot
    • Mark NicholsNicholas C. Talbot
    • G01S514
    • G01S19/41G01C15/002G01S19/33G01S19/44
    • Apparatus for measuring surveying parameters, such as distances and angular displacements between an instrument survey station and a mobile survey station, with improved accuracy. The invention combines a differential satellite positioning system (DSATPS), available with positioning systems such as GPS and GLONASS, with electromagnetic measurements of distances and optically encoded angles by a conventional electro-optical survey instrument to provide survey measurements that can be accurate to within a few millimeters in favorable situations. The DSATPS relies upon pseudorange measurements or upon carrier phase measurements, after removal of certain phase integer ambiguities associated with carrier phase SATPS signals. The SATPS may be retrofitted within the housing of the conventional electro-optical instrument. In a first approach, a remote station provides DSATPS corrections for the mobile station and/or for the instrument station. In a second approach, the mobile station provides DSATPS corrections for itself and for the instrument station. In a third approach, the instrument station provides DSATPS corrections for itself and for the mobile station.
    • 用于测量测量参数的装置,例如仪器测量站和移动测量站之间的距离和角位移,具有改进的准确度。 本发明结合了具有诸如GPS和GLONASS等定位系统的差分卫星定位系统(DSATPS),通过常规电光测量仪器进行距离电磁测量和光学编码角度,以提供可精确到 有利情况下几毫米。 在去除与载波相位SATPS信号相关的某些相位整数模糊度之后,DSATPS依赖于伪距测量或载波相位测量。 SATPS可以在传统电光仪器的外壳内改装。 在第一种方法中,远程站为移动站和/或仪器站提供DSATPS校正。 在第二种方法中,移动台为其本身和仪器站提供DSATPS校正。 在第三种方法中,仪器台为其自身和移动台提供DSATPS校正。
    • 5. 发明授权
    • Time-tagging electronic distance measurement instrument measurements to
serve as legal evidence of calibration
    • 时间标记电子距离测量仪器测量作为校准的合法证据
    • US6163294A
    • 2000-12-19
    • US151372
    • 1998-09-10
    • Nicholas C. Talbot
    • Nicholas C. Talbot
    • G01C1/02G01S1/00G01S19/04G01S19/10G01S19/44G01S19/46G01S5/02G01C3/00G01C5/00H04B7/185
    • G01S7/4021G01C1/02G01S7/497G01S17/023G01S19/235G01S19/37
    • A combined satellite positioning and electro-optical total station system including a satellite navigation receiver and a reference oscillator with a reference frequency output that can be related to precision time standards obtained from orbiting navigation-satellite transmissions. Such time standards are output by the satellite navigation receiver and are highly precise. An electronic distance meter (EDM) is included and has an EDM-transmitter for launching an out-bound signal to a distant target, and an EDM-receiver for receiving a reflected signal from the distant target. A phase measurement device is connected to the reference oscillator, and also to both the EDM-transmitter and EDM-receiver. It provides for a measurement of the difference in the number of cycles of the reference frequency between the out-bound signal and the reflected signal. A post-processor is connected, such as by radio link or floppy disk, to receive the measurement of the difference in the number of cycles of the reference frequency and the precision time standards obtained from orbiting navigation-satellite transmissions. Post-processing is then able to relate the corresponding measurements and time standards such that a distance-to-target measurement can ultimately be computed. Therefore routine calibration of the EDM is unnecessary. The measurement of the difference in the number of cycles of the reference frequency is time-tagged and stored for later retrieval to construct a time-ordered log. The precision time standards obtained from the orbiting navigation-satellite transmissions are similarly time-tagged and stored. Thus a series of distance-to-target measurement can be computed according to the order they were originally collected in the field by the EDM, as might be necessary in a legal inquiry.
    • 一种组合的卫星定位和电光全站仪系统,包括卫星导航接收机和具有参考频率输出的参考振荡器,该参考频率输出可以与从轨道卫星传输获得的精确时间标准相关。 这种时间标准由卫星导航接收机输出,并且精度高。 包括电子距离计(EDM),并具有用于向远距离目标发射出界信号的EDM发射机,以及用于接收远距离目标的反射信号的EDM接收机。 相位测量装置连接到参考振荡器,也连接到EDM发射机和EDM接收机。 它提供测量出射信号和反射信号之间参考频率的周期数的差异。 连接后处理器,例如通过无线电链路或软盘,以接收参考频率的周期数和从轨道卫星传输获得的精确时间标准的差异的测量。 后处理能够使相应的测量和时间标准相关联,使得最终可以计算距离到目标的测量。 因此,不需要对EDM进行常规校准。 对参考频率的周期数的差异的测量被时间标记并存储以供稍后检索以构建时间序列日志。 从轨道卫星导航卫星传输获得的精确时间标准类似时间标记和存储。 因此,可以根据EDM最初在现场收集的顺序来计算一系列距离到目标的测量,这在法律查询中可能是必要的。