井下地球物理信息是决定采矿方法和灾害防治的根本数据来源,十分重要。目前类似矿井人员识别跟踪系统的数据传送均采用一般窄带通信方式。用这种方式在井下对车辆识别进行常规测试时,识别准确率比地面测试有所下降,并产生信息误报。为从根本上解决问题,而引入扩频技术,采用直扩工作方式,达到彻底抑制干扰的目的,保证了信号的准确性。 Downhole geophysical information is the fundamental data source that determines the mining method and disaster prevention and control. It is very important. At present, similar mine personnel identification and tracking system data transmission using the general narrowband communication. When this method is used to routinely test the vehicle identification downhole, the recognition accuracy is lower than that of the ground test and a false alarm is generated. In order to fundamentally solve the problem, the introduction of spread spectrum technology, the use of direct-working method of work to achieve the complete suppression of interference purposes, to ensure the accuracy of the signal.