会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Position finding system
    • 定位系统
    • US4680590A
    • 1987-07-14
    • US637204
    • 1984-08-02
    • Eric LoweMartin C. PoppeAndrew Stratton
    • Eric LoweMartin C. PoppeAndrew Stratton
    • G01S5/00G01S5/10
    • G01S5/10G01S5/0009
    • Three fixed reference stations having known positions comprise Omega receivers. Phase measurements made at all three stations are assembled at a master station, utilizing landlines or radio links and, using the known positions of the stations, a central processing unit calculates not merely the offset of the master station as measured from the true position but also the errors in the azimuths of the propagation directions of the received signals. The position measurement of a vehicle with an Omega receiver is corrected on the basis of the offset and also the errors in the said azimuths. Sufficient accuracy is achieved for finding the position of land based vehicles whose position may be calculated subject to the corrections in the master station on the basis of raw data transmitted to the master station over a link. Alternatively the azimuth corrections may be transmitted to the vehicle over the link. Two fixed stations suffice if they can measure absolute phase.
    • 具有已知位置的三个固定参考站包括欧米茄接收器。 在所有三个站点进行的相位测量在主站上进行组合,利用陆线或无线电链路,并且使用站的已知位置,中央处理单元不仅计算从真实位置测量的主站的偏移量,而且还 接收信号的传播方向的方位误差。 基于偏移以及所述方位角的误差来校正具有欧米茄接收器的车辆的位置测量。 基于通过链路传送给主站的原始数据,可以根据主站中的校正来确定可以计算其位置的陆基车辆的位置的足够的精度。 或者,可以通过链路将方位校正传输到车辆。 两个固定电台就可以测量绝对相位。