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英国雷卡尔(Racal)勘测公司声称它的新型珀尔斯(Pulse)8/11定位装置的作用半径达800公里,其精度为5～10米。这种新型定位装置兼有新的信号处理技术(带有一台新的接收机装置),具有多方向
The British Racal survey company claims that its new Pulse 8/11 positioning device has a radius of 800 kilometers and an accuracy of 5 to 10 meters. This new positioning device incorporates new signal processing technology (with a new receiver device), with multi-directional