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STUDY OF LEVER-ARM EFFECT USING EMBEDDED PHOTOGRAMMETRY AND ON-BOARD GPS RECEIVER ON UAV FOR METROLOGICAL MAPPING PURPOSE AND PROPOSAL OF A FREE GROUND MEASUREMENTS CALIBRATION PROCEDURE
UAV photogrammetry GPS lever-arm calibration direct-georeferencing synchronisation MicMac
2016/3/25
Nowadays, Unmanned Aerial Vehicle (UAV) on-board photogrammetry knows a significant growth due to the democratization of using drones in the civilian sector. Also, due to changes in regulations laws g...
GPS Receiver Satellite/Antenna Selection Algorithm for the Stanford Gravity Probe B Relativity Mission
GPS Receiver Satellite Antenna Selection Algorithm Stanford Gravity Probe B Relativity
2015/6/29
This paper presents a GPS receiver satellite/antenna selection algorithm for the Stanford Gravity Probe B Relativity Mission.
GPS Receiver Architecture Effects on Controlled Reception Pattern Antennas for JPALS
GPS Receiver Architecture Effects Controlled Reception Pattern Antennas JPALS
2015/6/26
Stanford University is developing a controlled reception pattern antenna (CRPA) array with beam research testbed to evaluate CRPA algorithms and software tools, and their effects on GPS signals and sa...
GPS Receiver Performance Using Inertial-Aided Carrier Tracking Loop
GPS Receiver Performance Inertial-Aided Carrier Tracking Loop
2015/6/26
Radio frequency interference (RFI) has been a perplexing problem, affecting the navigation quality of the Global Positioning System (GPS). The presence of the RFI, or even hostile jamming, will reduce...
Commercial GPS in the Stratosphere:Cell Phone GPS Receiver Performance on a High Altitude Weather Balloon
Commercial GPS Stratosphere Cell Phone GPS Receiver Performance High Altitude Weather Balloon
2015/6/24
The primary objective of this effort was to characterize the GPS performance of a smartphone at high altitudes.Due to International Traffic in Arms Regulations (ITAR) restrictions in the United States...
HIGH PRECISION KINEMATIC POSITIONING USING SINGLE DUAL-FREQUENCY GPS RECEIVER
GPS Precise Point Positioning Precise Orbit and Clock Products
2015/6/1
As a result, it not only
increases the operational costs of equipment and human resources but also significantly increases the logistical complexity for many
applications such as land geodetic sur...
Performance evaluation of GPS receiver under equatorial scintillation
Component tracking performance GPS receiver Ionospheric scintillation
2010/10/25
Equatorial scintillation is a phenomenon that occurs daily in the equatorial region after the sunset and affects radio signals that propagate through the ionosphere. Depending on the temporal and spat...
基于NTRIP协议的虚拟差分GPS接收设备设计（Development of a GPS Receiver Based on NTRIP/VRS）
全球定位系统 虚拟参考站技术 NTRIP协议
2009/11/3
在分析NTRIP（networked transport of RTCM via Internet protocol）协议组成及特点的基础上，针对低成本、低精度的GPS OEM板，采用GPRS无线通信方式，设计开发了手持式虚拟差分GPS接收设备，并进行了试验验证。开发的接收设备是以ARM7为核心，包括无线通信模块、GPS OEM板、液晶显示模块、优盘存储模块等，能够完成GPS数据的接收、实时处理及...