Area estimation of time-domain GNSS receiver architectures

2014 ◽  
Author(s):  
Ville Eerola ◽  
Jari Nurmi
Keyword(s):  
Time Domain ◽  
Area Estimation ◽  
Gnss Receiver ◽  
Estimation Of Time

Accuracy assessment of a mobile terrestrial laser scanner for tree crops

2017 ◽  
Vol 8 (2) ◽  
pp. 178-182 ◽  
Author(s):  
F. H. S. Karp ◽  
A. F. Colaço ◽  
R. G. Trevisan ◽  
J. P. Molin
Keyword(s):  
Data Acquisition ◽  
Spatial Data ◽  
Accuracy Assessment ◽  
Laser Scanner ◽  
Terrestrial Laser Scanner ◽  
Tree Crops ◽  
Area Estimation ◽  
Gnss Receiver ◽  
Truncated Cone ◽  
Set Up

LiDAR technology is one option to collect spatial data about canopy geometry in many crops. However, the method of data acquisition includes many errors related to the LiDAR sensor, the GNSS receiver and the data acquisition set up. Therefore, the objective of this study was to evaluate the errors involved in the data acquisition from a mobile terrestrial laser scanner (MTLS). Regular shaped objects were scanned with a developed MTLS in two different tests: i) with the system mounted on a vehicle and ii) with the system mounted on a platform running over a rail. The errors of area estimation varied between 0.001 and 0.071 m2 for the circle, square and triangle objects. The errors on volume estimations were between 0.0003 and 0.0017 m3, for cylinders and truncated cone.

Time-Domain Estimation of Time-Varying Channels in OFDM Systems

2010 ◽  
Vol E93-B (1) ◽  
pp. 154-157
Author(s):  
Shaoping CHEN ◽  
Guangfa DAI ◽  
Wengui RAO
Keyword(s):  
Time Domain ◽  
Time Varying ◽  
Ofdm Systems ◽  
Estimation Of Time ◽  
Time Varying Channels

Analysis on the Performance of Anti-Narrowband Interference of GNSS Receiver in Time Domain

2013 ◽  
Vol 427-429 ◽  
pp. 1700-1704 ◽  
Author(s):  
Xiao Hu Yu ◽  
Yang Bo Huang ◽  
Wei Hua Mou
Keyword(s):  
Time Domain ◽  
Interference Suppression ◽  
Lms Algorithm ◽  
Narrowband Interference ◽  
Basic Principles ◽  
Interpolation Filter ◽  
Suppression Effect ◽  
Gnss Receiver ◽  
Interference Signals ◽  
Simulation Results

Starting from the actual demand for eliminating narrowband interference signals common in GNSS receiver, this brief has described basic principles of adaptive filter first based on LMS algorithm, and then analyzed the performance of anti-narrowband interference receiver with bilateral interpolation filter based on above principles. Finally, simulation results shows that compared with that without interference suppression processing, when JSR is 35dB, the Eb/N0 can improve by 5dB by this method; and when compared with theoretical values without interference, the Eb/N0 deteriorates by 1dB. With the increase of interference strength, the interference suppression effect by this method is more significant.

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