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AN ATTITUDE MODELLING METHOD BASED ON THE INHERENT FREQUENCY OF A SATELLITE PLATFORM
Satellite Attitude Post-Process AttModel FFT Inherent Frequency
2017/7/12
The accuracy of attitude determination plays a key role in the improvement of surveying and mapping accuracy for high-resolution remote-sensing satellites, and it is a bottleneck in large-scale satell...
The Error Analysis and Correction Method Research of the Attitude Data for the UAV Remote Sensing Images
GPS/INS Navigation Photogrammetry Calibration Error IMU
2015/11/24
As an important way to obtain the high-resolution remote sensing images, the unmanned aerial vehicle (UAV) aviation remote sensing plays a more and more important role in the area of photogrammetry an...
GPS-Based Attitude and Guidance Displays for General Aviation
GPS-Based Attitude Guidance Displays General Aviation
2015/6/29
GPS was used with a short baseline (1 and 2 wavelengths) triple antenna configuration t o obtain attitude in conjunction with solid state rate gyros. The system was used to provide an inexpensive Atti...
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...
Real Time Calibration of Antenna Phase Errors for Ultra Short Baseline Attitude Systems
Real Time Calibration Antenna Phase Errors Ultra Short Baseline Attitude Systems
2015/6/29
Ultra short baseline attitude systems with base lines under 0.5 meters are desirable for any application which requires a high level of integrity. The higher level of integrity is a direct result of t...
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 ...
A Gyro-Free Quaternion-Based Attitude Determination System Suitable for Implementation Using Low Cost Sensors
Gyro-Free Quaternion-Based Attitude Determination System Low Cost Sensors
2015/6/29
The time varying Kalman Filter implementation of this algorithm is exercised on simulated and real data collected from an inexpensive triad of accelerometers and magnetometers.
An Inexpensive and Robust GPS/INS Attitude System for Automobiles
Inexpensive Robust GPS/INS Attitude System Automobiles
2015/6/26
Many of the sophisticated control systems of modern automobiles require measurements of the vehicle’s attitude. Commercial GPS attitude systems are the method of choice for measuring attitude in many ...
GPS Attitude Determination for a JPALS Testbed:Integer Initialization and Testing
GPS Attitude Determination JPALS Testbed
2015/6/26
An attitude-based search algorithm was implemented for initial ambiguity resolution and integer determination, and then tested on a three-element equilateral array with baselines of 0.5m. Running the ...
GEO-REFERENCING CASI IMAGERY USING DIRECT MEASUREMENT OF POSITION AND ATTITUDE
Geo-referencing Multi-sensor Scanner GPS INS CASI Remote sensing
2014/12/30
Geo-referencing is the process of achieving correlation between airborne or spaceborne images and the Earth’s surface. Photogrammetry has been known as a tool of high geometric accuracy, but the manua...
ANALYSIS OF SATELLITE LASER ALTIMETRY RANGE MEASUREMENTS OVER LAND TOPOGRAPHY USING GENERALIZED ATTITUDE PARAMETER EXTRACTION
Laser Altimetry Satellite Topography Attitude Pointing
2014/12/22
Two new laser altimeter satellites are being launched by NASA in the near future: the ICESat (Ice, Clouds, Elevation) satellite and the VCL (Vegetation Canopy Lidar) satellite. Although each satellite...
User Equilibrium in a Disrupted Network with Real-Time Information and Heterogeneous Risk Attitude
User Equilibrium Disrupted Network Real-Time Information Heterogeneous Risk Attitude
2014/10/22
The traffic network is subject to random disruptions, such as incidents, bad weather, or other drivers’ random behavior. A traveler’s route choice behavior in such a network is thus affected by the pr...
Accuracy Evaluation of 3D Geometry from Low-Attitude UAV collections A case at Zijin Mine
UAV 3D Geometry Opencast Mine Structure from Motion (SfM) Accuracy Evaluation
2014/7/23
This study investigates the usability of low-attitude unmanned aerial vehicle (UAV) acquiring high resolution images for the geometry reconstruction of opencast mine. Image modelling techniques like S...
POSE VERSUS STATE: ARE SENSOR POSITION AND ATTITUDE SUFFICIENT FOR MODERN PHOTOGRAMMETRY AND REMOTE SENSING?
Sensor state sensor orientation sensor calibration spatio-temporal sensor calibration image deblurring focal-plane shutter camera models
2014/4/21
We investigate the advantages of using what we call sensor state parameters or sensor state to describe the geometrical relationship between a sensor and the 3D space or the 4D time-space that extend ...