scholarly journals Characterization Of Pseudo-Range Multipath Errors In An Urban Environment

2018 ◽  
Author(s):  
Eustachio Roberto Matera
Keyword(s):  
Urban Environment ◽  
Multipath Errors

Urban Environment: Characterization of the Wind in Flat Roofs

2019 ◽  
pp. 205-218 ◽  
Author(s):  
J. Lassig ◽  
U. Jara ◽  
J. J. Valle Sosa ◽  
C. Palese
Keyword(s):  
Urban Environment ◽  
Flat Roofs

Care to Share?

2015 ◽  
pp. 222-244
Author(s):  
Paolo Santi ◽  
Carlo Ratti
Keyword(s):  
Urban Environment ◽  
Methodological Approach ◽  
Relevant Literature ◽  
Taxi Driver ◽  
Data Sets ◽  
Exciting Field ◽  
Ride Sharing ◽  
Gps Devices ◽  
The Impact

GPS technology has been extensively used to optimize operation of taxi systems since the first appearance of commercial GPS devices. Owing to this, data sets generated by taxi fleets are amongst the first and most representative examples of massive GPS data that have been systematically collected. The analysis of these data sets has recently generated a rich literature aimed at, among other things, identifying optimal taxi driver strategies, predicting taxi demand or location of vacant taxis, etc. This chapter focuses on what is a new, exciting field of investigation of GPS taxi data analysis, namely, evaluating the impact of a shared taxi system on the urban environment. After introducing the notion of (taxi) ride sharing, the chapter presents the relevant literature, describing in greater details a methodological approach called “shareability network” that allows formal characterization of taxi sharing opportunities in an urban environment.

scholarly journals GNSS Array Antenna for Mitigating Multipath Errors in Urban Environment

2019 ◽  
Vol 94 ◽  
pp. 03009
Author(s):  
Toshiaki Tsujii ◽  
Kenta Yonebayashi ◽  
Takeshi Fujiwara ◽  
Sohshi Ohsawa
Keyword(s):  
Urban Environment ◽  
Array Antenna ◽  
Test Results ◽  
Front End ◽  
Rf Front End ◽  
Hardware Biases ◽  
Proper Weight ◽  
Multipath Errors

GNSS signal vulnerability has been a major concern especially for safety-of-life applications such as aircraft operations. Therefore, a GNSS array antenna technology was investigated focusing on beamforming to mitigate multipath errors in urban environment including airport surfaces. A commercial three-element GNSS antenna and RF-Front end were used to obtain digital IF data. The recorded In-phase/Quadrature IF data for three antennas were combined with proper weight to form beams towards satellites after so-called hardware biases were calibrated. Test results in multipath-rich environment demonstrated that 50-70% reduction of pseudorange errors due to multipath were possible if the beamforming algorithms were applied.

Characterization of the Karstic Process in an Urban Environment Using GPR Surveys

2014 ◽  
Vol 26 (8) ◽  
pp. 05014004 ◽  
Author(s):  
Ó. Pueyo Anchuela ◽  
A. M. Casas-Sainz ◽  
A. Pocoví-Juan ◽  
H. Gil Garbí ◽  
P. Calvín
Keyword(s):  
Urban Environment

Wood decay characterization of a naturally infected London plane-tree in urban environment using Py-GC/MS

2007 ◽  
Vol 78 (1) ◽  
pp. 228-231 ◽  
Author(s):  
Vittorio Vinciguerra ◽  
Aldo Napoli ◽  
Angela Bistoni ◽  
Gianluca Petrucci ◽  
Rocco Sgherzi
Keyword(s):  
Urban Environment ◽  
Wood Decay ◽  
Plane Tree ◽  
London Plane
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