搜索结果: 1-14 共查到“飞行器控制、导航技术 C/A Frequency”相关记录14条 . 查询时间(0.296 秒)
Analysis of a Three-Frequency GPS/WAAS Receiver to Land an Airplane
Three-Frequency GPS/WAAS Receiver Land an Airplane
2015/6/26
This paper investigates the vertical guidance performance of a multiple frequency Global Positioning System (GPS) (L1, L2, and L5)/Wide Area Augmentation System (WAAS) receiver in the presence of incl...
Techniques for Graceful Reversion from Dual to Single Frequency WAAS
Techniques Graceful Reversion Single Frequency WAAS
2015/6/26
This paper investigates techniques to sustain dual frequency ionosphere performance when a dual-frequency airborne user loses all but one GPS frequency while descending into the radio frequency interf...
A Prototyping Platform for Multi-Frequency GNSS Receivers
Prototyping Platform Multi-Frequency GNSS Receivers
2015/6/26
Dennis M. Akos completed the Ph.D. degree in Electrical Engineering at Ohio University conducting his graduate research within the Avionics Engineering Center. After completing his graduation he has s...
Evaluation of Two Types of Dual-Frequency Differential GPS Techniques under Anomalous Ionosphere Conditions
Dual-Frequency Differential GPS Techniques Ionosphere Conditions
2015/6/26
Strong ionosphere storms are a potential threat for the Local Area Augmentation System (LAAS). During these storms,large spatial and temporal gradients of the ionosphere component on the GPS signals c...
Optimizing WAAS Accuracy/Stability For a Single Frequency Receiver
Optimizing WAAS Accuracy/Stability Single Frequency Receiver
2015/6/26
The Wide Area Augmentation System (WAAS) provides accuracy (95%) to better than 1m in horizontal and 2m in vertical, which is quite an improvement compared to the stand-alone GPS accuracy and well wit...
A Reference Point-based Precise Relative Positioning Method Using a Single Frequency Receiver
Point-based Precise Relative Positioning Method Single Frequency Receiver
2015/6/26
This paper investigates how to take advantage of the known position of a point at which a single frequency GPS receiver is located. Using this reference point and a single frequency receiver, a precis...
Bounding Higher Order Ionosphere Errors for the Dual Frequency GPS User
Bounding Higher Order Ionosphere Errors Dual Frequency GPS User
2015/6/25
The advent of a second civil GPS frequency heralds a new phase of GPS performance. For single-frequency GPS users, the signal delay due to refraction through the ionosphere is the largest and most var...
Availability Benefit;Future Dual Frequency GPS Avionics;Ionospheric Scintillation
Availability Benefit Future Dual Frequency GPS Avionics Ionospheric Scintillation
2015/6/25
With the launch of the GPS-IIF satellites, the new civil navigation signals at L5 (1176.45 MHz) will become available to the GNSS community.One of the most significant benefits introduced by this new ...
Availability Benefit of Future Dual Frequency GPS Avionics under Strong Ionospheric Scintillation
Availability Benefit Future Dual Frequency GPS Avionics Ionospheric Scintillation
2015/6/25
A Global Positioning System (GPS) receiver may lose carrier tracking lock to the GPS signal under deep and frequent fades due to ionospheric scintillation. The frequent loss of lock observed during a ...
Physical Pseudo Random Function in Radio Frequency Sources for Security
Physical Pseudo Random Function Radio Frequency Sources Security
2015/6/25
There is tremendous market potential for location-based services (LBS), enabled by the rapid growth in the numbers of personal navigation devices and GPS-enabled mobile handsets. One of the major diff...
Evaluation of Dual-Frequency GBAS Performance using Data from Public Receiver Networks
Dual-Frequency GBAS Performance Public Receiver Networks
2015/6/25
Kazushi Suzuki is an Assistant Manager in the Air Traffic Management and Navigation Systems Department of NEC Corporation in Fuchu, Tokyo, Japan. He received his B.S. and M.S. degrees in Electrical En...
Optimization of a Vertical Protection Level Equation for Dual Frequency SBAS
Optimization Vertical Protection Level Equation Dual Frequency SBAS
2015/6/24
The advent of dual frequency Satellite Based Augmentation Systems (SBAS) will allow the aviation community to address some of the shortcomings of the current SBAS Minimum Operational Performance Stand...
The Need for a Robust Precise Time and Frequency Alternative to Global Navigation Satellite Systems
Robust Precise Time Frequency Alternative Global Navigation Satellite Systems
2015/6/24
Positioning, Navigation, and Timing (PNT) services are key enablers of both essential safety and security applications and economically beneficial capacity and efficiency applications worldwide.
GPS Time and Frequency Transfer: PPP and Phase-Only Analysis
GPS Time Frequency Transfer PPP Phase-Only Analysis
2009/9/3
To compute precise point positioning (PPP) and precise time transfer using GPS code and phase measurements, a new software named Atomium was developed by the Royal Observatory of Belgium. Atomium was ...