Accuracy in Determining Aircraft Position by Terrestrial Radio Navigation

The main objective of terrestrial radio navigation is position determination. In this study, the accuracy of the distance measurement, distance difference measurement, and integrated angle measurement/distance measurement terrestrial radio navigation methods is investigated. in order to calculate the position errors, simulations for the aircraft flight dynamics were carried out, and the obtained position values were compared with the actual values. The aircraft position determination methods were evaluated in the sense of accuracy. The position determination method with better accuracy was determined by comparing the absolute errors of the examined methods. Simulation and error analysis shows that the distance difference method is superior and gives more accurate position results. It was observed that the distance measurement method errors were smaller than the errors of the integrated angle measurement/distance measurement method.

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A radio navigation angle measurement method with entangled microwave signals

AIP Advances ◽

10.1063/1.5027474 ◽

2018 ◽

Vol 8 (6) ◽

pp. 065217 ◽

Cited By ~ 1

Author(s):

X. Li ◽

D. W. Wu ◽

T. L. Wei ◽

Q. Miao ◽

H. N. Zhu ◽

...

Keyword(s):

Measurement Method ◽

Angle Measurement ◽

Radio Navigation ◽

Microwave Signals

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Test Noise Procedures for Transport Category and Turbojet Airplanes

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.602-605.2473 ◽

2014 ◽

Vol 602-605 ◽

pp. 2473-2477

Author(s):

Guo Hua Yan ◽

Wen Qian Song ◽

Shi Qi Liu

Keyword(s):

Measurement Method ◽

Aircraft Noise ◽

Flight Path ◽

Position Determination ◽

Aircraft Flight ◽

Certification Standards ◽

Peripheral Areas

Aircraft noise is the chief source of the airport and its peripheral areas. CCAR imposes restriction on specific categories of aircraft and requires more strict measurements of the noise. More scientific measurement method is required to meet the progressively tighter certification standards. Test noise procedures for transport category and turbojet airplanes are analyzed in this paper. The main aspects involved are: test sit requirements, aircraft flight path guidance, aircraft position determination, take off tests, lateral tests and approach tests.

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Acoustic Distance Measurement Method Using 2ch Microphones Measurable from 0m Based on Phase Interference and Removal of DC Component

IEEJ Transactions on Electronics Information and Systems ◽

10.1541/ieejeiss.135.1349 ◽

2015 ◽

Vol 135 (11) ◽

pp. 1349-1350

Author(s):

Kazuhiro Suzuki ◽

Noboru Nakasako ◽

Masato Nakayama ◽

Toshihiro Shinohara ◽

Tetsuji Uebo

Keyword(s):

Measurement Method ◽

Distance Measurement ◽

Phase Interference ◽

Dc Component

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Acoustic Distance Measurement Method Based on Phase Interference Using Calibration and Whitening Processing in Real Environments

IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences ◽

10.1587/transfun.e94.a.1638 ◽

2011 ◽

Vol E94-A (8) ◽

pp. 1638-1646 ◽

Cited By ~ 3

Author(s):

Masato NAKAYAMA ◽

Shimpei HANABUSA ◽

Tetsuji UEBO ◽

Noboru NAKASAKO

Keyword(s):

Measurement Method ◽

Distance Measurement ◽

Phase Interference

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An Optical Frequency Domain Angle Measurement Method Based on Second Harmonic Generation

Sensors ◽

10.3390/s21020670 ◽

2021 ◽

Vol 21 (2) ◽

pp. 670

Author(s):

Wijayanti Dwi Astuti ◽

Hiraku Matsukuma ◽

Masaru Nakao ◽

Kuangyi Li ◽

Yuki Shimizu ◽

...

Keyword(s):

Femtosecond Laser ◽

Second Harmonic Generation ◽

Frequency Domain ◽

Harmonic Generation ◽

Measurement Method ◽

Second Harmonic ◽

Angle Measurement ◽

Laser Source ◽

Optical Frequency ◽

Measurable Range

This paper proposes a new optical angle measurement method in the optical frequency domain based on second harmonic generation with a mode-locked femtosecond laser source by making use of the unique characteristic of the high peak power and wide spectral range of the femtosecond laser pulses. To get a wide measurable range of angle measurement, a theoretical calculation for several nonlinear optical crystals is performed. As a result, LiNbO3 crystal is employed in the proposed method. In the experiment, the validity of the use of a parabolic mirror is also demonstrated, where the chromatic aberration of the focusing beam caused the localization of second harmonic generation in our previous research. Moreover, an experimental demonstration is also carried out for the proposed angle measurement method. The measurable range of 10,000 arc-seconds is achieved.

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Data Sampling System with High Speed and High Timing Synchronization Precision for Power Line Fault Position Detection based on Dual Ports Traveling Wave Distance Measurement Method

2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific ◽

10.1109/tdc.2005.1546785 ◽

2005 ◽

Author(s):

Zhang Donglai ◽

Zhang Dongsheng ◽

Zhang Jian ◽

Wang Chao ◽

Zhou Ying

Keyword(s):

Traveling Wave ◽

High Speed ◽

Measurement Method ◽

Power Line ◽

Distance Measurement ◽

Timing Synchronization ◽

Data Sampling ◽

Sampling System ◽

Position Detection

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LABORATORY TESTING OF LEICA AT401 LASER TRACKER

Acta Polytechnica ◽

10.14311/ap.2016.56.0088 ◽

2016 ◽

Vol 56 (2) ◽

pp. 88 ◽

Cited By ~ 1

Author(s):

Filip Dvořáček

Keyword(s):

Laboratory Testing ◽

Laboratory Tests ◽

Angle Measurement ◽

Distance Measurement ◽

Additive Constant ◽

Laser Tracker ◽

Simple Test ◽

Absolute Distance ◽

Warm Up ◽

The Stability

<p>This paper describes laboratory tests on a Leica AT401laser tracker. As the newer Leica AT402 model also uses the same firmware package, most of the results should also be valid for this device. First, we present the instrument’s firmware errors and the software used for testing. The ASME B89.4.19-2006 standard for testing laser trackers is briefly presented. The warm-up effect of the instrument is inspected with respect to both angle measurement and distance measurement. The absolute distance meter (ADM) is compared with a laboratory interferometer on a 30-meter long rail and also on a bench with automated movement of the carriage of the reflector. A time series of measurements for determining the additive constant is evaluated. A simple test of the stability of the distance measurement in field conditions is introduced. Most of the tests were carried out at the Research Institute of Geodesy, Topography and Cartography (RIGTC) and at the Faculty of Civil Engineering (FCE) of the Czech Technical University in Prague (CTU).</p>

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Analysis of “Distance-Loss” Model Influence Factors in Vehicular Ad Hoc Networks

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.490-495.1481 ◽

2012 ◽

Vol 490-495 ◽

pp. 1481-1485

Author(s):

Jiang Feng Wang ◽

Xue Dong Yan ◽

Shuo Nie

Keyword(s):

Measurement Error ◽

Vehicular Ad Hoc Networks ◽

Ad Hoc ◽

Influence Factors ◽

Distance Measurement ◽

Experimental Sample ◽

Position Information ◽

Loss Model ◽

Accurate Position ◽

Hoc Networks

In vehicular ad hoc network(VANETs), it is crucial for obtaining more accurate position information which variation rules between “distance-loss” model influence factors and distance measurement error is analyzed. Based on qualitative analysis of “distance-loss” model, field experimental scene and scheme are proposed. Using experimental sample data, the relation of environmental factor and shelter factor and distance measurement error is studied quantitatively. The experimental results show that distance measurement performance of optimized “distance-loss” model is significantly improved, and 6.7% is the largest reduction proportion of distance measurement error.

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