HF skywave elevation angle measurements as a diagnostic tool

1994 ◽  
Author(s):  
P.L. George
Keyword(s):  
Diagnostic Tool ◽  
Elevation Angle ◽  
Angle Measurements

Concept of phase centre of an array applied to elevation-angle measurements

1973 ◽  
Vol 120 (5) ◽  
pp. 541
Author(s):  
P.J.D. Gething
Keyword(s):  
Elevation Angle ◽  
Angle Measurements

scholarly journals Calibrating HF Radar Elevation Angle Measurements Using E  Layer Backscatter Echoes

Radio Science ◽  
2018 ◽  
Vol 53 (11) ◽  
pp. 1438-1449 ◽  
Author(s):  
P. Ponomarenko ◽  
J.‐P. St.‐Maurice ◽  
K. A. McWilliams
Keyword(s):  
Elevation Angle ◽  
Hf Radar ◽  
Angle Measurements

Potential accuracy of object localization with multilateration systems

2009 ◽  
Vol 1 (3) ◽  
pp. 215-222 ◽  
Author(s):  
Victor Chernyak
Keyword(s):  
Elevation Angle ◽  
Object Localization ◽  
Time Of Arrival ◽  
Potential Accuracy ◽  
Radar Systems ◽  
Angle Measurements ◽  
Marco Polo ◽  
Multistatic Radar ◽  
Emitter Localization ◽  
System Geometry

Multilateration (MLAT) systems and wide area MLAT (WAM) systems are particular cases of multisite (multistatic) radar systems (MSRSs): passive MSRSs (PMSRSs) with known expected signal waveforms. One of the most stringent requirements on an MLAT system is a very high accuracy of target (emitter) localization. In view of this, the potential accuracy of emitter localization (PAEL) based on Cramer–Rao inequality is important. Its dependence on system geometry and time of arrival (TOA) measurement accuracy allows choosing reasonable system geometry and requirements on TOA measurements. PAEL for MLAT and WAM systems with different geometry is considered, including systems proposed for the Marco Polo airport in Venice, Italy. The possibility of velocity determination using PAEL for landing and taking off aircrafts is also discussed. The concept of PAEL permits one to analyze joint measurements of different signal parameters and target coordinates. The effect of additional elevation angle measurements on PAEL in the WAM system for the Marco Polo airport is shown.

Low elevation angle measurements of the ATS-6 beacons at 4 and 30 GHz

1980 ◽  
Vol 35 (11-12) ◽  
pp. 494-500
Author(s):  
Russell V. Webber ◽  
K. Stewart McCormick
Keyword(s):  
Elevation Angle ◽  
Angle Measurements

Contact angle measurements: a preliminary diagnostic tool for evaluating the performance of ZnFe2O4 nano-flake based supercapacitors

2016 ◽  
Vol 52 (12) ◽  
pp. 2557-2560 ◽  
Author(s):  
Madagonda M. Vadiyar ◽  
Sagar C. Bhise ◽  
Sandip K. Patil ◽  
Sanjay S. Kolekar ◽  
Abhijeet R. Shelke ◽  
...  
Keyword(s):  
Contact Angle ◽  
Diagnostic Tool ◽  
Angle Measurements ◽  
Contact Angle Measurements

The contact angle of an electrolyte in contact with an electrode is used as an empirical diagnostic tool to pre-evaluate the performance of a supercapacitor prior to the actual fabrication of the device.

scholarly journals Comparison of SuperDARN peak electron density estimates based on elevation angle measurements to ionosonde and incoherent scatter radar measurements

2020 ◽  
Vol 72 (1) ◽  
Author(s):  
Alexander V. Koustov ◽  
Sydney Ullrich ◽  
Pavlo V. Ponomarenko ◽  
Robert G. Gillies ◽  
David R. Themens ◽  
...  
Keyword(s):  
Electron Density ◽  
Elevation Angle ◽  
Incoherent Scatter Radar ◽  
Density Estimates ◽  
Incoherent Scatter ◽  
Angle Measurements ◽  
Scatter Radar ◽  
Radar Measurements

scholarly journals The importance of elevation angle measurements in HF radar investigations of the ionosphere

Radio Science ◽  
2017 ◽  
Vol 52 (3) ◽  
pp. 305-320 ◽  
Author(s):  
Raymond A. Greenwald ◽  
Nathaniel Frissell ◽  
Sebastien de Larquier
Keyword(s):  
Elevation Angle ◽  
Hf Radar ◽  
Angle Measurements
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