The pseudo random noiseranging code has been applied extensively to spread spectrum communications.
伪随机码在扩频通信中得到广泛应用。
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Software and hardware implementation of ranging was sum up including triangulation & parallax measuring, pulse current ranging and pseudo random noiseranging.
The system of passive ranging SONAR makes use of the target noise received by the equipment which converts energy from one form to another to estimate the target distance.