基于扩频多址的差转游标测距方法与应用OA北大核心CSTPCD

To solve the problem that the vernier ranging method cannot realize the multi-access ranging by transponder,the authors propose a vernier ranging method based on spread spectrum multi-access technology which uses differential frequency transponder.The method uses the vernier method to achieve high precision ranging,uses the direct sequence spread spectrum(DSSS)technology to distinguish different ranging signals with orthogonal pseudo-noise(PN)codes,and uses different differential frequencies to distinguish different transponders.A ranging system is constructed according to this method.The ranging accuracy of the system can reach sub-meter level.The transponder uses the battery power supply and wireless communication scheduling,and is featured by simple structure,low cost,low power consumption,and simple installation.The system is suitable for the personnel positioning management in industrial scenes.