强激光与粒子束2025，Vol.37Issue(11)：114-122,9.DOI:10.11884/HPLPB202537.250107
无人机卫星导航系统压制干扰试验方法研究
Test method for dynamic multi-source suppression jamming effects on unmanned aerial vehicle satellite navigation systems
摘要
Abstract
[Background]The operational reliability of unmanned aerial vehicles(UAVs)is critically dependent on their global navigation satellite systems(GNSS).However,in the increasingly contested electromagnetic environments,the inherent weakness of GNSS signals makes them highly susceptible to suppression jamming,leading to performance degradation or mission failure.Existing test standards often focus on single-jammer,static scenarios and lack the quantitative rigor needed to assess the performance of advanced multi-element antenna systems under complex,dynamic conditions.[Purpose]This research aims to address this gap by developing and validating a standardized,quantitative test methodology for evaluating the anti-suppression-jamming performance of UAV GNSS systems.The objective is to create a reproducible framework that can simulate dynamic,multi-source interference and provide a comprehensive assessment from the radio frequency(RF)front-end to the complete system level.[Methods]A hybrid test methodology integrating direct radio frequency injection and over-the-air(OTA)spatial irradiation was established within a microwave anechoic chamber.This"injection-irradiation"approach facilitates a full-link evaluation.Both static and dynamic tests were conducted on a seven-element GNSS adaptive array receiver.Static tests involved assessing performance against an increasing number of jammers(one to six)from fixed spatial locations.Dynamic tests simulated UAV maneuvers by placing the receiver on a turntable rotating at 2°/s,exposing it to a changing interference geometry.Performance was quantified by the jamming-to-signal(J/S)ratio threshold,carrier-to-noise ratio,and positioning success rate.[Results]Static tests quantified a distinct saturation effect on the receiver's spatial filtering capability;the J/S ratio threshold for positioning failure decreased from 106 dB against a single continuous-wave jammer to 60 dB against six broadband noise jammers.Critically,dynamic tests revealed a complex spatio-temporal coupling effect.In the six-jammer scenario,the system maintained a 100%positioning success rate at a J/S ratio of 70 dB while rotating,paradoxically outperforming its 60 dB static failure threshold.This demonstrates that the constant change in interference geometry can prevent the algorithm from settling into a worst-case nulling solution.[Conclusions]The proposed combined injection-irradiation and dynamic test methodology provides a robust and standardized framework for the quantitative assessment of UAV GNSS anti-jamming capabilities.The findings reveal that static tests alone are insufficient for predicting performance,as dynamic conditions can fundamentally alter the system's response to multi-source interference.This research offers a critical tool for the realistic evaluation,design optimization,and validation of navigation systems intended for operation in complex electromagnetic environments.关键词
无人机卫星导航系统/压制干扰/动态辐照/注入-辐照联合试验/抗干扰能力Key words
UAV satellite navigation system/suppression jamming/dynamic irradiation/combined injection-irradiation test/anti-Jamming capability分类
信息技术与安全科学引用本文复制引用
马立云,陈亚洲,张羽瑄,王玉明..无人机卫星导航系统压制干扰试验方法研究[J].强激光与粒子束,2025,37(11):114-122,9.基金项目
国防科工局稳定支持计划项目(JCKYS2023DC02) （JCKYS2023DC02）
国防科工局稳定支持计划项目(KYSZGKQT0024002) （KYSZGKQT0024002）
