搜索结果: 1-15 共查到“Ranging”相关记录25条 . 查询时间(0.045 秒)
The Global Ecosystem Dynamics Investigation: High-resolution laser ranging of the Earth’s forests and topography
lidar ecosystem structure GEDI biomass
2024/1/22
Obtaining accurate and widespread measurements of the vertical structure of the Earth’s forests has been a long-sought goal for the ecological community. Such observations are critical for accurately ...
UWB with Pulse Reordering: Securing Ranging against Relay and Physical Layer Attacks
secure ranging physical layer security
2017/12/25
Physical layer attacks allow attackers to manipulate (spoof) ranging and positioning. These attacks had real world impact and allowed car thefts, executions of unauthorised payments and manipulation o...
Multicarrier phase-based ranging is fast emerging as a cost-optimized solution for a wide variety of proximity-based applications due to its low power requirement, low hardware complexity and compatib...
MANGROVE PLANTATION FOREST ASSESSMENT USING STRUCTURAL ATTRIBUTES DERIVED FROM LIGHT DETECTION AND RANGING (LiDAR) DATA
Mangroves Rhizophoraceae Plantation Point Cloud LiDAR
2016/11/30
Estimating the structural and functional attributes of forests is integral in performing management strategies and for understanding forest ecosystem functions. Field sampling methods through plot lev...
AIRBORNE LIGHT DETECTION AND RANGING (LIDAR) DERIVED DEFORMATION FROM THE MW 6.0 24 AUGUST, 2014 SOUTH NAPA EARTHQUAKE ESTIMATED BY TWO AND THREE DIMENSIONAL POINT CLOUD CHANGE DETECTION TECHNIQUES
LiDAR Change Detection ICP
2016/7/8
Remote sensing via LiDAR (Light Detection And Ranging) has proven extremely useful in both Earth science and hazard related studies. Surveys taken before and after an earthquake for example, can provi...
HORIZONTAL POSITION OPTIMAL SOLUTION DETERMINATION FOR THE SATELLITE LASER RANGING SLOPE MODEL
Laser ranging Fresnel diffraction Slope model Echo signal Horizontal position
2016/7/4
According to the Gaussian-fit laser echo model and the terrain slope model, the regular mean value theorem and the asymptotic principle of the median point of the double integral mean value theorem ar...
RESEARCH ON VEHICLE-BORNE SYSTEM OF 3D SPATIAL DATA ACQUISITION BASED ON POS AND LASER RANGING TECHNOLOGY
POS Laser Scanner CCD Distance Measurement Indicator Vector Sensor Data Acquisition
2016/3/17
Ground spatial data acquisition is a key technology in digital city engineering, It is important to improve the efficiency of data acquisition. The main purpose of this paper is to develop vehicle-bor...
An automatic high precision registration method between large area aerial images and aerial light detection and ranging data
Aerial images aerial light detection and ranging data image matching point cloud aerotriangulation single image spatial resection registration
2015/7/27
The integration of digital aerial photogrammetry and Light Detetion And Ranging (LiDAR) is an inevitable trend in Surveying and Mapping field. We calculate the external orientation elements of images ...
3d Modeling for Historical Structure Using Terrestrial Laser Ranging Data
Cultural Heritage Mode ling Visu ali zation
2015/7/15
Re cently, a l as er sc anne r has be en r ec eivin g mor e att ention as a us e ful to ol for r e al-time 3D dat a
acquisition, and various applic ations su ch as c ity mode ling, DTM gener ation an...
Aviation Utilization of Geostationary Satellites for the Augmentation of GPS:Ranging and Data Link
Aviation Utilization Geostationary Satellites Augmentation GPS Ranging Data Link
2015/6/29
The Wide Area Augmentation System (WAAS) is a GPS-based navigation aid currently under development by the Federal Aviation Administration (FAA). WAAS will providecorrections to aviation users for the ...
Mixed One-way and Two-way Ranging to Support Terrestrial Alternative Position Navigation & Timing
Mixed One-way wo-way Ranging Terrestrial Position Navigation Timing
2015/6/24
Two-way ranging between the ground station and aircraft can provide true-range measurement allowing for horizontal positioning using only two stations. However,this infrastructure benefit comes at a c...
QUALITY CONTROL ISSUES OF AIRBORNE LASER RANGING DATA AND ACCURACY STUDY IN AN URBAN AREA
Photogrammetry Laser Ranging Error Analysis Surface Reconstruction Segmentation Fusion
2014/12/22
The major factors affecting the accuracy of Airborne Laser Scanning (ALS) systems are the errors in ranging, in the position of the laser firing point, and in the attitude of the laser beam. Since the...
Coded Pulse Transmission and Correlation for Robust Ultrasound Ranging from a Long-Cane Platform
Coded Pulse Transmission Correlation Robust Ultrasound Ranging a Long-Cane Platform
2014/10/23
The objective of this research was to increase the independence and safety of the sight impaired by developing an enhanced travel aid in the form of a sensor embedded longcane to reduce the risk of in...
3D painting documentation: evaluation of conservation conditions with 3D imaging and ranging techniques
Cultural Heritage Photogrammetry Structured light sensor Monitoring, Comparison
2014/7/30
The monitoring of paintings, both on canvas and wooden support, is a crucial issue for the preservation and conservation of this kind of artworks. Many environmental factors (e.g. humidity, temperatur...
Evaluation & Comparison of Ranging Using Universal Access Transceiver (UAT) and 1090 MHz Mode S Extended Squitter (Mode S ES)
APNT UAT Mode S ES
2015/6/24
The FAA Alternative Position Navigation and Timing effort is developing technologies to provide navigation service capable of sustaining operations in the event of the loss of Global Navigation Satell...