ID 原文 译文
12784 提出ー种由四个干扰阵元呈线阵不等间隔排布而构成的全新多环路反向交叉眼干扰构型，并借助通道回波、矢量合成和角度因子,分别对新构型下多环路反向交叉眼干扰的诱骗角度、诱骗距离和参数 容限进行了详细的理论推导和仿真验证。 In this paper, a new mult -loop reverse cross-eye jamming configuration is proposed, which is composed of four jamming elements arranged at unequal intervals in linear array. With the help of channel echo !vector synthess and angle actor !the theoretcal dervaton and simulaton vercaton o the decoy angle !decoy distance and parameter tolerance of the new confguraton are carred out in detals.
12785 仿真结果表明，在Ku波段,搭载于大型平台上的新环路构型不仅可产生很大的交叉眼增益，引导单脉冲雷达产生更大的诱骗距离和诱骗角度,而且在给定角度因子的情况下,随着干扰距离和干扰机转角的增大,角度因子等高线明显减小,多环路反向交叉眼干扰对参数容限的要 求也越来越严苛。 The simulation results show that in Ku band, the new loop configuration mounted on a large platform can produce a large crosseye gain, and guid the monopulse radar to generate a larger decoy distance and angle. In the case of given angle factor, with the increase of jamming di stance and jammer angle, the contour of the angle factor decreases obviously, and the requrements for parameter tolerance of mutiToop reverse cross eye jamming is becoming more and more stringent.
12786 伪距偏差是抑制北斗系统服务能力提升的重要误差源，影响用户实时定位性能和卫星精密定轨处理。 Pseudorange bias is an important error source to restram the improvement o Be iDou Nav igation Satellte System(BDS) servce capability, which aects users' real-time positioning perormance and satellte precise orbit determination.
12787 目前对北斗三号伪距偏差的分析研究与测量较少,文章首先从理论上分析了接收机的前端滤波带宽 和相关器间隔对伪距偏差的影响,并对理论分析结果进行了仿真。 However, there are ew researches and measurements on the pseudorange bias o the BDS-3, this paper theoretcally analyzes the influence o front-end bandwidth and correlator spac on pseudorange bases o recevers, and simulates the theoretcal analysis results.
12788 然后在此基础上利用7.5 m大口径天线对北斗三号在轨卫星信号进行采集,使用软件接收机对卫星实测数据的伪距偏差进行测试验证，全面分析了前端滤波带宽和相关器间隔对北斗三号卫星信号伪距偏差的影响。 Then on ths bass, the lve s o the BDS-3was collected wth the 7.5mdsh antenna, and the pseudorange bases on the measured data o the lve satellte was tested and vered by the software reciever, comprehensively analyzing the influence on ront-end bandwidth and correlator spacng on the pseudorange bas o the BDS- 3satellte s
12789 根据理论分析和实测验证的结果,得到了接收机的相关器间隔和前端滤波带宽对北斗三号卫星B1I、B3I和B1C信号的伪距偏差影响范围。 Accordng to the results on theoretcal analyss and test vercation, the range o ront-end bandwdth and correlator spacng o the recever on the pseudorange bas on the BDS-3satellte B1IB3Iand B1C obtaned.
12790 研究表明,通过合理设置接收机相关器间隔和前端滤波带宽!可有效减小北斗三号卫星信号伪距偏差,提升用户定位精度。 The pseudorange bas o BDS-3satellte signal can be eectvely reduced and the postonng accuracy o users can be by setting the suggested parameters.
12791 卫星导航信号容易受到强干扰的影响，频域抗干扰算法是常用的抗干扰算法之一，但该方法实现有效干扰抑制的同时也会导致信号相关峰的畸变，从而造成导航信号接收性能下降。 Satellite navigation signals are susceptible to strong interference. The frequency domain intererence suppression (FDIS) algorthm is one of the most useful ant-jamming algorthms. Although this method can achieve effective interference suppression, it wlll also cause distortion o the autc-correlation function (ACF) of satellte signal, which wlll degrade signal acquisition performance.
12792 为了分析频域抗干扰算法对导航信号接收性能的影响，建立了抗干扰后信号相关峰畸变模型，并从信噪比损耗、第一旁瓣位置、峰值旁瓣比三个参数对相关峰模型进行深入分析，进一步建立了抗干扰后信号的捕获性能模型，同时对比了不同捕获策略下的捕获概率。 In order to analyze the mfluence of the FDIS algorthm on the acquisition performance, the ACF model of the satellte signal after ant<-jammng establshed. The ACF parameters are also analyzed, such as sgnal-to-nose rato loss, peak sidelobe ratio, and first sidelobe position. Additionally, the acquisition performance model after FDIS method is further estabiished, and the acquisition probabilities under different acquisition strategies are compared.
12793 理论分析和数值仿真结果表明，频域抗干扰后的相关峰的信噪比下降且出现了旁瓣，畸变参数与干扰参数密切相关，抗干扰滤波器会导致信号捕获性能下降。 Theoretcal analysis and numercal simulation results show that the signal-to-nose ratio of the ACF after FDIS method decreases, side lobes appear beside the man lobe, and the distorton parameters are closely related to the interference parameters. It also shows that the signal acquisition performance deterorates after the FDIS method.