A 0.18 μm CMOS dual-band low power low noise amplifier for a global navigation satellite system

2010 ◽  
Vol 31 (12) ◽  
pp. 125001 ◽  
Author(s):  
Bing Li ◽  
Yiqi Zhuang ◽  
Zhenrong Li ◽  
Gang Jin
Keyword(s):  
Low Power ◽  
Global Navigation Satellite System ◽  
Satellite System ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Dual Band ◽  
Navigation Satellite ◽  
Global Navigation ◽  
Noise Amplifier ◽  
Global Navigation Satellite

scholarly journals Satellite Cross-Talk Impact Analysis in Airborne Interferometric Global Navigation Satellite System-Reflectometry with the Microwave Interferometric Reflectometer

2019 ◽  
Vol 11 (9) ◽  
pp. 1120 ◽  
Author(s):  
Raul Onrubia ◽  
Daniel Pascual ◽  
Hyuk Park ◽  
Adriano Camps ◽  
Christoph Rüdiger ◽  
...  
Keyword(s):  
Frequency Band ◽  
Global Navigation Satellite System ◽  
Cross Talk ◽  
Impact Analysis ◽  
Satellite System ◽  
Dual Band ◽  
Navigation Satellite ◽  
South Wales ◽  
Global Navigation ◽  
Global Navigation Satellite

This work analyzes the satellite cross-talk observed by the microwave interferometric reflectometer (MIR), a new global navigation satellite system (GNSS) reflectometer, during an airborne field campaign in Victoria and New South Wales, Australia. MIR is a GNSS reflectometer with two 19-element, dual-band arrays, each of them having four steerable beams. The data collected during the experiment, the characterization of the arrays, and the global positioning system (GPS) and Galileo ephemeris were used to compute the expected delays and power levels of all incoming signals, and the probability of cross-talk was then evaluated. Despite the MIR highly directive arrays, the largest ever for a GNSS-R instrument, one of the flights was found to be contaminated by cross-talk almost half of the time at the L1/E1 frequency band, and all four flights were contaminated ∼5–10% of the time at the L5/E5a frequency band. The cross-talk introduces an error of up to 40 cm of standard deviation for altimetric applications and about 0.24 dB for scatterometric applications.

scholarly journals OutFin, a multi-device and multi-modal dataset for outdoor localization based on the fingerprinting approach

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Fahad Alhomayani ◽  
Mohammad H. Mahoor
Keyword(s):  
Global Navigation Satellite System ◽  
Urban Areas ◽  
Satellite System ◽  
Reference Points ◽  
Navigation Satellite ◽  
Data Types ◽  
Entry Barrier ◽  
Promising Alternative ◽  
Global Navigation ◽  
Global Navigation Satellite

AbstractIn recent years, fingerprint-based positioning has gained researchers’ attention since it is a promising alternative to the Global Navigation Satellite System and cellular network-based localization in urban areas. Despite this, the lack of publicly available datasets that researchers can use to develop, evaluate, and compare fingerprint-based positioning solutions constitutes a high entry barrier for studies. As an effort to overcome this barrier and foster new research efforts, this paper presents OutFin, a novel dataset of outdoor location fingerprints that were collected using two different smartphones. OutFin is comprised of diverse data types such as WiFi, Bluetooth, and cellular signal strengths, in addition to measurements from various sensors including the magnetometer, accelerometer, gyroscope, barometer, and ambient light sensor. The collection area spanned four dispersed sites with a total of 122 reference points. Each site is different in terms of its visibility to the Global Navigation Satellite System and reference points’ number, arrangement, and spacing. Before OutFin was made available to the public, several experiments were conducted to validate its technical quality.

Sign in / Sign up

Export Citation Format

Share Document