基于矢量信号处理的DVOR地面设备设计与验证  

Design and Verification of DVOR Based on Vector Signal Processing

作　　者：郑金华 刘新宇 ZHENG Jinhua;LIU Xinyu

机构地区：[1]中电科星河北斗技术(西安)有限公司,西安710068

出　　处：《现代导航》2024年第6期407-410,416,共5页Modern Navigation

基　　金：国家重点研发计划(2023YFB3907002)。

摘　　要：由于卫星导航信号的脆弱性,多普勒甚高频全向信标(DVOR)仍然是一种重要的航空导航基础设施。针对传统DVOR集成度低、精度不高等缺点,设计了一种基于矢量信号处理技术的DVOR。发射机利用直接数字频率合成器(DDS)等技术实现多种调制信号的射频直接生成,在信号形成中提供射频(RF)实时控制回路,输出信号稳定,并保证多通道相位相干。利用高速模数转换器(ADC)直接RF采样进行监视器信号处理,提高系统完好性。经过测试表明,设备性能稳定,完全满足相关标准规范要求。The Doppler Very High Frequency Omni-Directional Range(DVOR)remains a critical aviation infrastructure system due to vulnerability of GNSS signals.In order to overcome the shortcoming of traditional DVOR such as low integration,low accuracy,a DVOR based on vector signal processing is designed.The transmitter exploits Direct Digital Synthesizer(DDS)to directly generate various modulated signals at Radio Frequency(RF),providing real-time RF control loop in signal forming,stable output signal,and ensuring multi-channel phase coherence.Using high speed Analog-to-Digital Converter(ADC)for direct RF sampling for monitor signal processing to improve system integrity.After testing,it has been shown that the equipment has stable performance and fully meets the requirements of relevant standards and specifications.

关 键 词：多普勒甚高频全向信标 矢量信号处理 直接数字频率合成器 直接射频采样 

分 类 号：TN965[电子电信—信号与信息处理]