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现代导航

现代导航

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《现代导航》（双月刊）创刊于2010年，是由中国电子科技集团公司第二十研究所主办中国电子学会导航分会协办的一份国内导航领域的专业性杂志。《现代导航》旨在探讨、研究、宣传和报道国际、国内导航领域的最新理论技术和科学研究成果，为广大导航专业技术人员提供了一个出色的研究、学习和交流的平台。
  • 发文量：927
  • 被引量：161
  • H指数：0
  • 开始收录时间：2010(1)
  • CNKI综合因子：0.316
  • 维普期刊影响因子： 0.36
  • 万方期刊影响因子：0.25
  • 创刊时间：2010
  • 国内刊号/CN：61-1478/TN
    国际刊号/ISSN：1674-7976
  • 发行周期：双月刊
    邮发代号：-
  • 主管单位：工业和信息化部
    主办单位：中国电子科技集团公司第二十研究所
现代导航-联系信息
  • 主编：吴燕
  • 电话：029-88788648
  • 邮箱：daohangbjb@163.com
  • 地址：陕西省西安市92信箱33分箱
  • 邮编：710068
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现代导航 >2023年第5期

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  • 摘要：文章分析了国外通信对抗装备的发展特点与趋势，主要包括：从硬件为核心向软件为核心发展；从压制干扰向灵巧干扰发展；从单平台/单系统向网络化/体系化方向发展；从粗放式大功率干扰到精确的外科手术式干扰；从“软杀伤”向“硬杀伤”发展；从功能固化向智能认知化发展；从对抗单纯的通信目标向对抗网电一体的目标发展。%The development features and trend analysis of communication countermeasure system abroad are analyzed, mainly including that evolving from hardware-centric to software-centric, evolving from suppressive jamming to smart jamming, evolving from single platform based to network enabled, evolving from soft-killing effects to physical-killing effects, evolving from single function to cognitive, evolving from single communication target to both network and electricity target.
  • 摘要：The principle of the wide lane phase and narrow pseudo-range method and the traditional ionosphere residual method is analyzed in this paper. The larger cycle slip can be detected and repaired combining the wide lane phase and narrow pseudo-range method, but the same slips occurred on L1 carrier and L2 carrier can not be detected. While only separate less cycle slips which limits the application can be detected by the ionosphere residual method, so a comprehensive method is improved to detect and repair cycle slips. The simulation results show that the combined method can effectively deal with the cycle slips in the actual circumstance.%本文首先分析了宽巷载波与窄巷伪距法和电离层残差法检测和修复周跳的原理，结合宽巷载波与窄巷伪距法能够检测和修复较大的周跳，但无法检测同时发生在载波L1、L2上相同数量的周跳，而电离层残差法仅能检测出小周跳的特点，提出了将宽巷载波与窄巷伪距法和电离层残差法相结合的复合检测方法。首先由宽巷载波与窄巷伪距法检测和修复周跳，然后再由电离层残差法进行周跳检测和修复。仿真结果表明该复合方法能够有效地检测和修复GPS载波相位的周跳。
  • 摘要：露天采矿的信息化发展对数据通信的要求日益提高，无线Mesh网络在露天矿生产调度中具有广泛应用前景。通过对网络覆盖、容量、频率规划等方面的分析，针对露天矿 GPS车辆调度系统提出了一种基于WiFi-Mesh网络的无线通信系统组网方案，为实际工程应用提供了参考和借鉴。%The informatization of strip mining leads to high increase for data communication requirements. Wireless mesh network has wide application in the production scheduling of the strip mine. By analyzing coverage, capacity and frequency planning of the network, a scheme of wireless communication system based on WiFi-Mesh network is provided for GPS vehicle scheduling system in the strip mine to make reference to engineering application.
  • 摘要：《现代导航》前身为《导航》,1964年创刊,是由中国电子科技集团公司第二十研究所主办,中国电子学会导航分会协办的一份国内导航领域的专业性杂志。为了适应导航领域的技术发展现状和广大读者的需求,2010年,经国家新闻出版署批准,《现代导航》公开出版发行,具有国内统一连续出版物编号和国际标准连续出版物编号。
  • 摘要：为了在文本数据中选择有效的文本特征，本文提出一种新的基于改进二进制粒子群优化的特征选择算法，该算法利用翻转角度，局部翻转因子和全局翻转因子来决定粒子群的进化，通过求解目标函数的最优解，得到二进制特征选择系数，选择特征选择系数为1的特征为有效特征。实验证明，该方法不仅有效地降低了运算开销，而且提高了文本分类的准确度。%In order to extract effective features from text, we propose a novel feature selection method based on improved binary particle swarm optimizer. The improved binary particle swarm optimizer iterates according to round angle, local round factor and global round factor, search best values of fitness function, and then select those feature with weight 1, and ignore those features with weight 0. The experimental results show that the method not only cuts down computing cost, and is helpful to improve precision of bio-entity recognition.
  • 摘要：STAP greatly enhances the degree of freedom without increasing the number of array elements, at the same time, the high computational complexity becomes the main obstacle in its engineering implementation. Reduced-dimension processing to the receiving data has becomes the main method of resolution. Under the background of GPS receiver joint space-time interference, the performances of reduced-dimension method are analyzed and simulated in this paper, the result shows that the reduced-rank multistage Wiener filter(RR-MWF) based reduction-dimension technique outperforms other traditional methods, it dramatically reduces the amount of computation in GPS space-time interference and has a better convergence and interference performance.%空时联合自适应处理在增加阵列空时自由度的同时，繁重的计算量成为其工程实现中的主要障碍，对接收数据进行降维处理已经成为主要解决手段。本文在GPS接收机空时联合抗干扰背景下，对几种降维处理方法的性能进行详细的分析和仿真，结果表明基于降秩维纳滤波的降维处理技术优于传统方法，能够大大简化GPS空时抗干扰的计算复杂度，并且具有较好的收敛性能和抗干扰性能。
  • 摘要：阵列信号中通道误差的存在会影响波束形成算法的性能，使其不能正常工作。通过对通道间及通道带内幅相误差建模，分析其对波束形成的影响。通过对波束形成算法理论分析并结合实际应用情况，通道间幅相误差影响波束形成的波束幅度，不影响波束相位；通道带内幅相误差，会同时影响波束幅度和波束相位。本文给出通道带内误差的校正方法，通过计算机仿真证实本文所分析结果的正确性。%The capability of adaptive beam forming algorithm is affected by the channel error of array signal. According to the error modeling of amplitude phase in the channel, the influence on the beam forming is analyzed. Though the theory analysis and the practical application, the amplitude phase error in channels affect the range but not affect the phase. The amplitude phase error in channels band affect both range and phase. The channel calibration method is given in this paper. The simulation result shows that the validity of the proposed analysis.
  • 摘要：某新型制导雷达在S曲线测试时发现，在波束展宽状态下曲线异常，针对此问题，进行了分析研究，确认由于天线波束展宽方法引起。对天线波束展宽方法进行了研究，进行了仿真和实际测试，试验表明采取外缘单元“0、随机配相法”进行波束展宽满足任务要求，问题得到解决。%In S curve testing, new guidance radar is found to be unusual in condition of beam broadening. After the analysis, we trust this issue is caused by beam broadening method. So the method of antenna beam broadening is studied, simulated and tested. The experiment result shows that“0、л”random phase method is satisfied with the mission requirement and the problem is settled.
  • 摘要：FFT Spectrum analysis can only dispose a limited number of discrete sampling signal, this is inevitable occurs the leak of time domain truncation, which decrease the accuracy of measurement. So we must use an approach to improve and increase the precision. The energy centrobaric method is adopted to satisfy the requirement of spectrum analysis precision in practical application. The simulation results show that, under the condition of a whole cycle sampling, the accuracy has been improved greatly and is sufficient to meet the requirements of practical application.%FFT 谱分析只能对有限的离散采样信号进行处理，这就不可避免的存在由于时域截断而产生频谱泄露，使测量精度降低。因此必须采用其他方法进行改进以提高测量精度。本文主要采用能量重心校正法以满足实际应用中对频谱分析精度的要求。仿真结果表明，在非整周期采样的情况下，精度已经有了很大程度的提高，因此在一定程度上足以满足实际应用的要求。
  • 摘要：针对导航的多样化发展趋势，提出了一种基于逆向无源定位的辐射源目标地图导航新方法，以已知坐标位置的辐射源目标为参考点，通过无源定位方程的逆向求解实现了运载体的单站独立导航和多站协同导航，并对该方法的基本原理、实现形式、重要特点以及所涉及的主要关键技术进行了详细的阐述，对其应用前景进行了分析，从而为抗干扰、反欺骗、多样化导航应用提供了新的参考。%The-new-navigation-method-is-put-forward-for-the-diversification-of-the-navigation-program.-This-is-the-radiation-object-map-navigation-based-on-the-inverse-passive-location.-The-single-observer-depended-navigation-and-multi-observers-corporative-navigation-are-completed-though-the-resolving-inverse-passive-location-equation-after-selecting-the-radiation-objects-with-known-position-as-the-reference-points.-The-basic-principle,-processing-route,-main-characteristics-and-relative-key-technologies-are-discussed-in-detail.-The-application-foreground-is-analyzed.-It-is-the-important-reference-for-anti-jamming-and-anti-deceived-diversity-navigation.
  • 摘要：The-stable-circuit-is-the-important-component-of-the-platform-inertial-navigation-system,-with-the-function-of-isolating-the-angular-motion-of-the-airplane.-Its-precision-and-reliability-affect-directly-the-precision-and-reliability-of-the-inertial-navigation-system.-According-to-the-fault-analysis,-the-outer-ring-bearing,-DC-torque-motor,-slip-ring-and-control-circle-are-the-main-parts-of-stable-circuit.-On-the-basis-of-deducing-the-dynamic-stiffness-of-the-stable-circuit,-the-failure-mechanism-is-analyzed-and-the-relevant-solution-is-presented.-These-measures-have-been-applied-in-the-inertial-navigation-systems.-The-fault-analysis-shows-that,-after-taking-the-solution,-the-fault-rate-of-the-stable-circuit-decreases-greatly-and-these-solutions-are-effective.%稳定回路是平台式惯导系统的重要组成部分，其作用是隔离载体的角运动，稳定回路的精度和可靠性直接影响惯导系统的精度和可靠性。根据故障统计和分析，稳定回路故障的主要部位分别为：外环轴承、直流力矩电机、导电环以及稳定回路控制线路。在对稳定回路动态刚度进行推导的基础上，分析了以上四个部位引起稳定回路故障的机理和故障原因，提出了相应的改进措施。这些措施已经逐步应用于惯导系统中。故障统计表明，采取措施后的惯导系统稳定回路故障有了明显降低，所采取的措施有效可行。
  • 摘要：In-OFDM-system,-the-ICI-between-the-carriers-has-a-serious-influence-to-the-channel-equalization.-On-the-other-hand,-considering-the-MMSE-channel-equalization-algorithm,-the-equalization-MSE-results-are-not-stable-in-different-channel-models.-A-robust-MMSE-channel-equalization-algorithm-is-presented-in-this-paper,-with-the-core-is-that-normalizing-the-PDP-of-different-type-of-channels,-then-the-MMSE-algorithm-could-get-a-stable-and-robust-performance-in-different-type-of-channels.%在OFDM调制系统中，由于多载波的存在，载波间ICI对信道均衡结果影响很大，同时，采用 MMSE 信道均衡算法对不同的信道模型也存在均衡误差不稳定的情况。本文提出一种鲁棒的MMSE信道均衡算法，该算法的核心是针对不同信道对信道的PDP进行归一化处理，从而得到在不同类型信道下稳定且鲁棒的信道均衡性能。
  • 摘要：本文分析了民航甚高频通信系统的干扰机制，建立干扰分析模型，对民航西安区管甚高频系统的实际干扰问题进行了分析，介绍了无线电频率管理的基本概念，讨论了电磁频谱的概念、特点，论述了电磁频谱检测分析和评估的重要性，并对国内外无线电频率管理的现状做了介绍，深入分析了互调干扰机理，总结了调频广播对民航甚高频系统干扰的类型和产生机制。最后，分别从频率和功率两个维度建立了互调干扰频率分析模型。为民航甚高频通信系统的规划和管理提出了有益的参考。%This-paper-analyzes-the-interference-mechanism-of-civil-aviation-VHF-communications-system-and-establishes-a-reasonable-interference-analysis-model.-The-actual-interference-problems-in-VHF-systems-of-civil-aviation-in-Xi'an-DMC-are-analyzed-by-using-the-proposed-model.-Firstly,-the-basic-concept-of-radio-frequency-management-is-introduced,-the-concept-of-the-electromagnetic-spectrum-and-its-characteristics-are-discussed,-and-the-importance-of-the-electromagnetic-spectrum-detection-analysis-and-evaluation-are-discussed.-Then-the-state-of-the-art-technology-of-radio-frequency-management-is-introduced,-the-in-depth-analysis-of-inter-modulation-interference-mechanism-is-conducted,-the-type-and-the-generation-mechanisms-of-the-interference-between-civil-aviation-VHF-system-and-FM-broadcasting-system-are-summarized.-Finally,-the-intermodulation-interference-frequency-analysis-model-is-established-from-the-two-dimensions-of-frequency-and-power-respectively,-which-can-provide-useful-references-for-civil-aviation-planning-and-management-of-VHF-communications-system.
  • 摘要：针对传统罗经安装或校准测量方法操作复杂、耗时长、投入大，且不适用与船舶浮动状态下船艏向测量的缺点，提出采用星站差分GPS测船艏向的方法。工程实例表明，星站差分GPS测艏向的方法适用于专业海洋调查船的罗经安装与罗经校准值的获取。%Considering-that-the-traditional-surveying-method-in-installation-and-calibration-has-the-disadvantages-of-complicated-operation,-long-timing,-large-investment-and-not-available-for-measuring-the-heading-of-vessel-while-the-vessel-is-being-float,-the-paper-introduces-the-satellites-chain-differential-GPS-to-get-the-heading-of-vessel.-The-engineering-instance-shows-that,-the-way-of-satellites-chain-differential-GPS-can-be-used-in-installation-and-calibration-of-gyrocompass-in-professional-marine-surveying-vessel.
  • 摘要：In-this-paper,-a-method-for-least-square-curve-fitting-is-introduced-and-Station-Keeping-Equipment-(SKE)-and-its-Direction-finding-principle-are-described.-According-to-the-characteristic-of-signal-in-SKE-directional-antenna,-an-implementation-method-using-least-square-curve-fitting-in-SKE-direction-finding-is-given.%本文介绍了最小二乘曲线拟合方法，阐述了位置保持设备（以下简称SKE）及其测向原理。根据SKE定向天线信号的特点，给出了利用最小二乘曲线拟合实现SKE测向的方法。
  • 摘要：The-Ground-Based-Augmentation-System-(GBAS)-is-called-the-Local-Area-Augmentation-System-(LAAS)-by-FAA.-The-LAAS-ground-facility-(LGF)-performs-the-pseudo-range-carrier-smoothing-and-the-integrity-monitoring.-It-produces-the-pseudo-range-correction-and-broadcasts-the-differential-message.-The-airborne-system-users-can-receive-GBAS-signals-to-perform-pseudo-range-differential-position-and-approach-guidance.-This-article-focuses-mainly-on-the-components-of-GBAS,-its-working-principles,-the-technological-research-survey-and-application-prospect.-The-application-of-GBAS-in-the-area-of-civil-aviation-will-achieve-considerable-direct-or-indirect-economic-and-social-benefits.%地基增强系统地面站进行载波平滑伪距，进行完好性监测，产生伪距校正信息，并广播差分信息报文，机载用户接收GBAS信号进行伪距差分定位，完成进近引导。本文主要介绍了GBAS系统的系统组成、工作原理、技术研究概况及应用前景，GBAS系统在民航领域的应用，将取得非常可观的直接、间接经济效益和社会效能。
  • 摘要：仪表着陆系统下滑信标天线是通过地面反射作用形成引导飞机着陆的下滑面引导信号，反射面的反射性能直接影响下滑面的信号质量，本文通过应用菲涅耳原理对下滑信标天线反射面保护区进行了计算，可作为下滑台保护区确定的参考。%The-beaconing-antenna-of-glide-path-in-ILS-generates-guidance-signals-for-aircrafts-through-the-reflection-effect-of-the-ground.-The-quality-of-the-signals-can-be-directly-affected-by-the-performance-of-the-reflection-surface.-The-thesis-provides-the-reference-for-protection-area-selection-for-glide-path-by-calculating-the-antenna-reflector-protection-area-through-Fresnel-theory.
  • 摘要：本文首先简要介绍了仪表着陆系统的原理，然后应用软件无线电理论对仪表着陆航向引导信号解调作了较详细的分析，并根据理论分析进行了MATLAB系统仿真。%Firstly,-the-principle-of-Instrument-Landing-System(ILS)is-described.-Then,-the-localizer-beacon-signal-demodulation-of-ILS-is-particular-analyzed-based-on-software-radio-theory-and-finally-the-system-is-simulated-by-MATLAB-software.
  • 摘要：DDS(data-distribution-service)-is-the-first-comprehensive-specification-available-for-“publish-subscribe”-data-distribution,-which-is-published-by-OMG.-A-data-distribution-method-based-on-DDS-is-studied-in-this-paper,-and-the-application-example-is-presented.-The-demands-of-reliability-and-real-time-in-some-platform-system-based-on-this-method-are-satisfied-well-with-the-data-transmission.%DDS 是对象管理组织（OMG）推出的数据分发服务规范，专门针对分布式实时系统中基于数据的发布/订阅架构。本文研究了一种基于DDS模型的信息分发方法，然后通过一个例子演示了这种信息分发方法。该方法可很好的满足某平台系统对于数据传输的高可靠性、高实时性的要求。
  • 摘要：通过对舰载火控雷达的现状和任务需求进行分析，提出了舰载火控雷达（尤其是小口径近防系统火控雷达）未来发展的思路。火控雷达应进一步提高威力，实现多功能综合；同时舰载火控雷达也可实现协同探测；实现标准化的信息接口，采用模块化设计，提高适装性。%Development-idea-of-fire-control-radar-for-short-range-defense-system-with-small-caliber-is-presented-by-analyzing-its-status-and-task-requirements.-Fire-control-radar-shall-improve-power-and-accomplish-multifunction-integration.-Meanwhile,-shipborne-fire-control-radar-also-accomplishes-cooperation-detection-as-well-as-standard-information-interface-and-adopts-modular-design-to-improve-the-adaptability.
  • 摘要：《现代导航》前身为《导航》,1964年创刊,是由中国电子科技集团公司第二十研究所主办,中国电子学会导航分会协办的一份国内导航领域的专业性杂志。为了适应导航领域的技术发展现状和广大读者的需求,2010年,经国家新闻出版署批准,《现代导航》公开出版发行,具有国内统一连续出版物编号和国际标准连续出版物编号。
  • 摘要：It-is-of-consequence-to-perform-the-research-on-Global-Navigation-Satellite-System-(GNSS)-jamming-structure-since-the-fragility-of-GNSS-system-under-electromagnetic-environment.-To-save-hardware-resources-and-developing-time,-this-paper-implements-the-GNSS-jamming-structure-using-SIMULINK-and-analyses-its-performance,-which-is-helpful-in-practical-uses.%全球卫星导航系统（GNSS）在电磁环境下的脆弱性迫使开展 GNSS 干扰系统的研究变得尤为重要。为节约硬件资源和缩短开发周期，本文设计实现了基于 SIMULINK 的 GNSS干扰仿真平台，分析了该平台的仿真性能，研究结果具有一定的工程应用价值。
  • 摘要：利用相似递推法，即可将基于短基线的相差测量结果拓展到长基线多站无源定位系统，由于双站相差测距法实际上是建立在三站定位技术之上的，且测量精度与量值巨大的光速无关，所以就能实现比现有双站测向和三站时差法更高的定位精度。但为实现准确定位，必须对递推程差进行修正。本文在已有分析的基础上，利用双站间的交会角，给出了一种更适用于工程设计的递推程差修正方法。%Using-similarity-recurrence-method,-the-measuring-phase-difference-result-based-on-short-baseline-can-be-widened-to-multi-stations-passive-location-system-with-long-baseline.-Because-the-phase-difference-ranging-of-two-stations-is-based-on-the-three-stations-location-technology-and-its-measurement-accuracy-is-not-associated-with-velocity-of-light-whose-magnitude-is-enormous,-the-higher-positioning-accuracy-can-be-realized-as-compared-with-the-DF-of-two-stations-and-the-time-difference-of-three-stations-in-existence.-But,-the-path-difference-obtained-by-recurred-must-be-corrected-in-order-to-realize-veracious-location.-On-the-basis-of-existing-analysis,-this-paper-presents-a-correct-method-which-is-more-applicable-for-engineering-design-by-making-use-of-the-cut-Angle-between-two-stations.
  • 摘要：In-order-to-improve-anti-jamming-capability-of-GNSS-navigation-receiver,-a-multi-linear-constrained-adaptive-algorithm-is-researched,-which-could-be-used-on-the-GNSS-adaptive-nulling-antenna.-Furthermore,-a-steep-drop-algorithm-is-adopted-to-avoid-the-autocorrelation-matrix-inversion,-thus,-the-difficulty-of-calculation-is-reduced-greatly.-Through-the-simulation-and-analysis,-the-results-show-that-the-proposed-adaptive-filtering-algorithm-can-generate-deeper"nulling"in-the-direction-of-interfering-signals-and-able-to-provide-higher-output-signal-interference-ratio,-thus-it-has-better-interference-rejection-capability.%为了提高卫星导航接收机抗干扰能力，深入研究了应用于卫导自适应调零天线的多线性约束自适应调零算法。对现有功率倒置自适应算法进行改进，将阵列协方差矩阵分为干扰子空间和噪声子空间，通过对子空间的处理提高输出信干比，在不是很强的干扰信号方向上也形成较深“零陷”。此外，为了降低计算的难度，避免自相关矩阵求逆，采用了陡降算法。通过仿真分析，结果表明：所研究的自适应滤波算法能够提供较高的输出信干比，在干扰信号方向产生较深的“零陷”，具有较好的干扰抑制能力。
  • 摘要：Based-on-the-principle-of-electrostatic-supported-gyro-monitor-(ESGM),-the-influence-of-Vessel-Maneuver-condition-on-ESGM-is-studied-in-this-paper-by-analyzing-and-simulating,-the-test-results-show-that-the-error-of-ESGM-under-Vessel-Maneuver-condition-cannot-be-ignored-and-it-provides-the-basis-for-scientific-use-of-ESGM.%结合静电陀螺监控器的工作原理，理论分析和仿真船舶机动对静电陀螺监控器定位误差的影响，结果表明：船舶机动对静电陀螺监控器精度的影响不可忽略，为船舶科学使用ESGM提供依据。
  • 摘要：Practice-teaching-with-simulator-has-become-an-important-approach-to-train-the-pilots.-Firstly,-the-research-significance-for-teaching-and-training-by-inertial-navigation-system-(INS)-simulator-and-the-function-are-analyzed-in-this-paper.-The-total-design-scheme-is-proposed,-the-INS-navigator-hardware-box-is-designed-based-on-microprocessor,-the-software-is-designed-based-on-object-oriented-technology-and-virtual-instrument-technology.-This-simulator-has-several-work-modes-and-it-can-simulate-all-functions-of-the-real-INS-based-on-virtual-vision-and-flight-simulation.-The-practice-results-of-students-show-that-it-is-good-for-training-and-should-be-popularized.%利用模拟器进行实践性教学已经成为空中领航人才培养的重要手段，分析了惯导训练模拟器研发对于教学训练的意义及其应具备的基本功能，给出了系统的总体设计方案，利用单片机技术进行了惯导训练模拟器操作盒的硬件设计，结合面向对象和虚拟仪表技术完成了软件的设计。该惯导训练模拟器具有多种工作方式，结合视景和飞行仿真技术，可以真实地模拟惯导的工作情况，学员的训练实践表明，其具有很好的训练效果，值得推广应用。
  • 摘要：本文在剖析基于性能的导航及其相关概念基础上，从梳理国内外相关应用入手，对其关键技术和应用进行了分析，并结合我国航空发展和空管运行特点，研究提出了基于性能的导航技术在我国军航空管系统中的应用策略。%Based on the analysis of PBN and its related concepts, the domestic and foreign related applications are sorted out in this paper, and its key technologies and applications are analyzed. Then combined with the development of China aviation and the characteristics of air traffic management operation, the application strategy of performance based navigation technology for the military air traffic management system is presented. .
  • 摘要：The GPS Autonomous Integrity Monitoring Availability Prediction System calculates the RAIM availability of GPS satellites ahead, and can serve in the airport. The prediction system utilizes the GPS satellites almanac, the NANU message, the NOTAM message, and airport information to predict GPS satellites RAIM availability. The prediction system has exact forecast result, and easy to engineering application.%GPS自主完好性监测可用性预测系统提前计算GPS卫星的RAIM可用性，可以为机场服务。该预测系统使用GPS卫星历书、NANU报、NOTAM报和机场信息对GPS卫星的RAIM可用性进行预测。该预测系统的预测结果准确，易于工程应用。
  • 摘要：结合美国协同作战（Cooperative Engagement Capability, CEC）系统、防御系统的最新发展情况，进行了时空统一的需求分析，给出了时空统一的概念、时空统一总体架构以及时空统一处理过程。结合典型应用场景进行时空统一处理方法的仿真，验证了方法的有效性。%Combined the latest developments of the American Cooperative Engagement Capability(CEC) and defensive system, the requirement of space-time synchronization is analyzed, and the concept, the architecture and the process of space-time synchronization is proposed. Through the simulation combined the typical application scenario, the validity of the space-time synchronization is verified.
  • 摘要：中近程战术导航系统（塔康，俄制近程）信标天线下视波分量因周边地面反射，与直射波叠加后其合成场强度随距离呈峰-谷状分布，位于谷区的飞机因场信号过弱会丢失导航信息。本文描述了基于信标天线/机载天线高度、方向图特性、地空距离、地面反射系数等参数的合成场峰-谷区分布规律，分析了各参数影响，并归纳了弱化反射场效应的选项。%The beaconing antenna downward-looking wave of the short-range tactics navigation reflect because of the surface around, after adding the direct wave, its intensity is peak-valley distributed by the distance, and the airplane located in the valley area might lose the navigation signal causing by the too weakness signals. Based on beaconing/ airborne antenna height, direction chart characteristic, ground-to-air distance and the surface reflection, the peak-valley distribution is described in this paper. The influences on each parameter are analyzed, and the options of softening the reflection are concluded.

    现代导航的期刊信息

    • 创刊时间：2010
    • 地区：CN
    • 语言：中文
    • 热门主题：中国电子科技集团公司第二十研究所
    • 学科分类：

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    • 期刊栏目：导航技术；数据通信；专题研讨
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