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多侧音测距广泛应用于USB统一测控系统中,载波及侧音跟踪状态对距离结果有重要影响。在距离捕获阶段,载波及侧音跟踪状态影响距离匹配结果,在距离跟踪阶段,载波或侧音失锁会造成距离结果跳周。结合多测距音测距原理对捕获阶段和跟踪阶段中出现的问题进行了深入分析,在测距过程中利用速度值对距离结果进行实时检测及递推的方法可以解决上述问题,并结合工程应用数据对问题解决方法进行了验证。
Multi-side tone ranging widely used in the USB unified measurement and control system, carrier and sidetone tracking state of the distance results have a significant impact. In the distance capture phase, the carrier and sidetone tracking conditions affect the distance matching result. In the tracking phase, the carrier or sidetone mis-lock will cause the jump distance result. Combined with the principle of multi-ranging pitch-based ranging, the problems in the acquisition phase and the tracking phase are analyzed in depth. The above problems can be solved by using velocity values in real-time detection and recursion of distance results in the process of ranging, Application data to verify the problem solving method.