空军工程大学学报2026，Vol.27Issue(3)：41-48,8.DOI:10.3969/j.issn.2097-1915.2026.03.005
无线电干涉测距多径误差减轻方法
A Method of Mitigating Multipath Error in Radio Interference with Ranging
摘要
Abstract
As a phase-based ranging technology based on frequency-hopping signals,radio interferometric ranging(RIR)offers advantages of low cost,high accuracy,and anti-interference.Though frequency diver-sity brought by frequency hopping enables RIR to have a certain anti-multipath capability,its performance is still limited in strong multipath environments such as indoors.For this reason,a method for actively cor-recting the multipath ranging error of RIR based on amplitude information is proposed.The ranging error can be ultimately mitigated by estimating the multipath parameters of channel from the unused amplitude information in the original RIR,and calculating and compensating for the multipath error of the phase measurement based on these parameters.The method is characterized by no additional hardware and low algorithmic complexity,and its multipath resolution can be improved by increasing the hopping bandwidth.The simulations and experimental results show that the method is valid.With a hopping bandwidth of 200 MHz and 25 frequency points,a confidence level range error of 95％decreases 81％and 75％respec-tively by applying the multipath error mitigation method in two indoor scenarios,achieving sub-0.5-meter.关键词
无线电干涉测距/相位测量/多径效应/幅度信息/误差减轻Key words
radio interferometric ranging/phase measurement/multipath effect/amplitude information/error mitigation分类
信息技术与安全科学引用本文复制引用
张骋,李立,卞志昂,牛奔,杨宾锋..无线电干涉测距多径误差减轻方法[J].空军工程大学学报,2026,27(3):41-48,8.基金项目
陕西省自然科学基础研究计划(2022JQ-645) （2022JQ-645）
