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Search Results - Showing 36 - 48 Of 57
_urban-positioning-3d-mapping-aided-gnss-using-dual-frequency-pseudorange-measurements-from-smartphones.webp "A smartphone with a highly sensitive antenna receiving numerous unhealthy measurements suffers from non-line-of-sight (NLOS) reception and multipath effects. 3D mapping-aided (3DMA) GNSS has been proven to be effective in urban environments. However, the multipath effect remains challenging for urban positioning. In nature, the new GNSS civilian L5-band signal with a shorter chip length shows a much better resistibility to multipath than the conventional L1-band signal. Therefore, this study int")
⏲ 26 min 45 sec ✓ 31-Mar-2022
_low-cost-inertial-aiding-for-deep-urban-tightly-coupled-multi-antenna-precise-gnss.webp "By James E. Yoder and Todd E. HumphreysnnA vehicular pose estimation technique is presented that tightly couples multi-antenna carrier-phase differential GNSS (CDGNSS) with a low-cost MEMS inertial sensor and vehicle dynamic constraints. This work is the first to explore the use of consumer-grade inertial sensors for tightly coupled urban CDGNSS, and first to explore the tightly coupled combination of multi-antenna CDGNSS and inertial sensing (of any quality) for urban navigation. An unscented l")
⏲ 37 min 76 sec ✓ 18-Apr-2023
_how-to-create-a-gnss-rover-profile.webp "In this video you learn how to create a new profile in order to connect to a GNSSantenna.n(Leica Geosystems Machine Control Academy project ID 149XA-05)")
_anywaves-gnss-l1-e1-band-miniature-antenna.webp "ANYWAVES GNSS L1/E1 band antenna is used for the satellite precise positioning subsystem. nIt receives signals from the GNSS Global Navigation Satellite System constellations and helps to locate the satellite in three dimensions at a given time.nLet's get to know more about it thanks to this 2 minutes video ! nnFor more information, visit https://anywaves.eu/products/gnss-l1-...")
_low-cost-inertial-aiding-for-deep-urban-tightly-coupled-multi-antenna-precise-gnss.webp "A vehicular pose estimation technique is presented that tightly couples multi-antenna carrier-phase differential GNSS (CDGNSS) with a low-costnMEMS inertial sensor and vehicle dynamic constraints. This work is the first to explore the use of consumer-grade inertial sensors for tightly coupled urban CDGNSS, and first to explore the tightly coupled combination of multi-antenna CDGNSS and inertial sensing (of any quality) for urban navigation. An unscented linearization permits ambiguity resolution")
⏲ 1 min 73 sec ✓ 23-Feb-2023
_enabling-rtk-positioning-under-jamming-mitigation-of-carrier-phase-distortions-induced-by-blind-spatial-filtering.webp "New GNSS applications demand resilience against radio interference and high position accuracy. Separately, these demands can be fulfilled by multi-antenna systems using spatial filtering and carrier-phase positioning algorithms like real-time kinematic (RTK), respectively. However, combining these approaches encounters a severe issue: The spatial filtering induces a phase offset into the measured carrier phase leading to a loss of position accuracy. This paper presents a new approach to compensa")
⏲ 1 min 79 sec ✓ 22-Feb-2023
_new-omni-antenna-kit-mp4.webp "A first look at the Triangl Extended Range Antenna Kit. This kit includes a pair of 6dBi antennas and 50cm cables. They are compatible with Emlid Reach RS RTK GNSS receivers. nnAdding an antenna to the RTK base station unit immediately boosts the power of LoRa data transmissions to the RTK rover. Adding the second antenna to the RTK rover unit provides the ultimate operational benefits to surveys conducted in challenging environments. Benefits can include reduced age of differential corrections")
_conducting-an-aerial-survey-124-4-steps-to-capture-precise-rgb-amp-lidar-data.webp "The Mangoesmapping aerial survey team head out to a mine site to capture orthoimagery and LiDAR data for a client using a DJI M300 with the L1 payload. This video provides an overview of the process of capturing precise aerial imagery. This imagery and LiDAR data was processed after the event using a Post-Processed Kinematic (PPK) workflow.nnPrior to mapping the area of interest, a site assessment is essential. This includes an assessment of the size of the area, terrain, wind direction and haza")
⏲ 4 min 30 sec ✓ 25-Jan-2023
_improved-gps-based-single-frequency-orbit-determination-for-the-cygnss-spacecraft-using-gipsyx.webp "This paper presents methods for the precise orbit determination (POD) of a satellite in the CYGNSS constellation based on available single-frequency GPS code and carrier measurements. The contributions include the development and evaluation of procedures for single-frequency POD with GipsyX, improvement of CYGNSS orbit knowledge, and an assessment of its final accuracy. Ionospheric effects are mitigated using the GRAPHIC processing method, and spacecraft multipath effects are calibrated with an")
⏲ 1 min 78 sec ✓ 24-Feb-2023
_improved-gps-based-single-frequency-orbit-determination-for-the-cygnss-spacecraft-using-gipsyx.webp "This webinar presents methods for the precise orbit determination (POD) of a satellite in the CYGNSS constellation based on available single-frequency GPS code and carrier measurements. The contributions include the development and evaluation of procedures for single-frequency POD with GipsyX, improvement of CYGNSS orbit knowledge, and an assessment of its final accuracy. Ionospheric effects are mitigated using the GRAPHIC processing method, and spacecraft multipath effects are calibrated with a")
⏲ 26 min 11 sec ✓ 24-May-2023
_gidas-gnss-interference-detection-amp-analysis-system-by-ohb-digital-solutions.webp "OHB Digital Solutions GmbH develops systems for monitoring the GNSS frequency bands as well as detection, classification and localization of intentional or unintentional interference sources.nnMany stakeholders and applications as well as critical infrastructure providers are relying on GNSS to provide their services. Since Global Navigation Satellite Systems (GNSS) are widely used in safety and value critical applications, GIDAS detects, classifies and localizes any GNSS interference signals an")
⏲ 1 min 81 sec ✓ 26-May-2020
_prn-sequence-estimation-with-a-self-calibrating-40-element-antenna-array.webp "This work explores the use of a low-cost global navigation satellite system (GNSS) antenna array including front-ends and a global navigation satellite system (GNSS) software receiver to receive signals of opportunity (SoO) whose pseudorandom noise (PRN) code is unknown. The front-ends are only loosely synchronized in time and frequency via hardware elements, and precise synchronization or calibration is achieved by using open service global navigation satellite system (GNSS) signals. After cali")
⏲ 1 min 27 sec ✓ 18-Jul-2023
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