搜索结果: 1-15 共查到“知识库 飞行器控制、导航技术 GPS”相关记录120条 . 查询时间(0.238 秒)
为改善法矩阵病态性，实现整周模糊度快速求解，提出惯性导航系统(inertial navigation system，INS)辅 助单频GPS 整周模糊度求解算法。将惯性伪距单差、GPS 伪距双差、载波相位双差联立得到模糊度浮点解及其协方 差阵，利用LAMBDA 算法求解出整周模糊度固定解。分析引入惯性信息改善复共线性和病态性的原因，并利用GPS 实测数据与仿真INS 数据进行实验验证。实验结果表明...
一种带自适应因子的IMM-UKF的GPS/BD-2导航方法
自适应 无迹卡尔曼滤波 交互式多模型
2015/7/27
针对GPS/北斗-2(BD2)卫星导航系统中机动载体运动模型和噪声统计特性不确定性导致滤波精度低的问题，为提高导航定位的精确性和稳定性，提出一种自适应的滤波方法。首先，提出了一种新的自适应UKF (AUKF)算法，该方法将残差序列的协方差矩阵视为过程噪声协方差矩阵的不确定量，基于此采用平滑滤波的方法设计自适应因子，并利用该自适应因子实时调整过程噪声协方差矩阵，减弱了噪声统计特性不确定性对滤波精度...
针对微机电-船舶惯性导航/全球定位(MEMS-SINS/GPS)组合导航系统在GPS信号中断时造成的强非线性误差及重获信号后精度变差的问题,设计了基于Rao-Blackwellised无迹卡尔曼滤波(RB-UKF)的组合导航算法。首先,基于捷联平台欧拉失准角定义了姿态误差,建立了捷联惯导系统的非线性误差传播方程。然后,针对组合导航的状态方程为非线性而量测方程呈线性的特点,设计了RB-UKF算法,在...
星载GPS数据质量控制方法研究
星载全球定位系统 质量控制 TurboEdit方法 周跳探测 抗差估计
2015/7/8
针对星载全球定位系统（GPS）数据的特点，分别从阈值设置和周跳检验量的角度对TurboEdit方法进行改进，并在传统抗差估计方法的基础上，提出一种改进的抗差估计策略。利用GRACE卫星的星载GPS观测数据对本文的质量控制方法进行分析验证，结果表明：改进的质量控制方法能明显增强周跳探测性能，有效抑制小周跳和粗差的影响，提高几何法定轨的精度和可靠性。
A New Approach to GPS Integrity Monitoring Using Prior Probability Models and Optimal Threshold Search
GPS Integrity Monitoring Prior Probability Models Optimal Threshold Search
2015/6/29
Current methods for GPS receiver autonomous integrity monitoring are limited by the assumptions they make. Using published studies of navigation system reliability, this paper develops a prior probabi...
A Real-Time Architecture for Kinematic GPS Applied to the Integrity Beacon Landing System
Real-Time Architecture Kinematic GPS Applied Integrity Beacon Landing System
2015/6/29
Recent flight tests of the Integrity Beacon Landing System (IBLS) have demonstrated the feasibility of using GPS for Category III precision landing. To achieve these results, an airborne architecture ...
During an autoland flight test of Stanford’s Integrity Beacon Landing System in October 1994, one approach was aborted before landing due to a temporary satellite outage. Analysis showed that both the...
Flight Tests of a 3-D Perspective-View Glass-Cockpit Display for General Aviation Using GPS
Flight Tests 3-D Perspective-View Glass-Cockpit General Aviation GPS
2015/6/29
A display that takes advantage of the three dimensional positioning data available from differential GPS has been flight tested on a general aviation aircraft. This glass-cockpit instrument provides a...
Carrier Differential GPS for Real-Time Control of Large Flexible Structures
Carrier Differential GPS Real-Time Contro Large Flexible Structures
2015/6/29
Current lab tests demonstrate vibration and orientation control of highly exible vehicles using only the GPS carrier to measure motion. A 30-foot long test structure has been constructed that is suspe...
Inertially Aided GPS Based Attitude Heading Reference System (AHRS) for General Aviation Aircraft
GPS Attitude Heading Reference System (AHRS) General Aviation Aircraft
2015/6/29
GPS was used with ultra-short baselines (2-3 carrier wavelengths) in a triple antenna configuration to obtain attitude for General Aviation (GA) aircraft.Through algorithm selection and error source c...
GPS was used with ultra-short baselines (2-3 carrier wavelengths) in a triple antenna configuration to obtain aircraft atti tude in real time. Through algorithm selection and error source calibration,...
A Low-Cost GPS/Inertial Attitude Heading Reference System (AHRS) for General Aviation Applications
Low-Cost GPS/Inertial Attitude Heading Reference System (AHRS) General Aviation Applications
2015/6/29
An inexpensive Attitude Heading Reference System (AHRS) for General Aviation applications is developed by fusing low cost ($20 - $1000) automotive grade inertial sensors with GPS. The inertial sensor ...
Interference Direction Finding for Aviation Applications of GPS
Interference Direction Aviation Applications GPS
2015/6/29
The Local Area Augmentation System (LAAS) is being developed by the US Federal Aviation Administration (FAA) to provide satellite navigation performance compliant with the stringent requirements for a...
GPS Supplemental Navigation Systems for Use During the Transition to a Sole-Means-GPS National Airspace System
GPS Supplemental Navigation Systems Sole-Means-GPS National Airspace System
2015/6/29
The current Federal Radio Navigation Plan presents a plan that includes phasing out of existing radio-navigation aids as part of the transition to sole-means-GPS navigation in the United States. GPS b...
A Real-Time Signal Quality Monitor For GPS Augmentation Systems
Real-Time Signal Quality Monitor GPS Augmentation Systems
2015/6/29
The Local Area Augmentation System (LAAS) and the Wide Area Augmentation System (WAAS) are ground based applications of differential GPS to support aircraft terminal navigation and precision approach.