Flight Tests of Error-Bounded Heading and Pitch Determination with Two GPS Receivers

Lau, Lawrence; Cross, Paul; Steen, Meiko

doi:10.1109/taes.2012.6129643

Cited by 25 publications

(13 citation statements)

References 20 publications

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“…Applying several receivers increases the density of measurements as well as enabling the evaluation of their accuracy and eliminating incorrect results. Moreover, it enables obtaining a number of additional parameters describing the railway track geometry [ 16 , 17 , 18 , 39 , 40 , 41 , 42 ].…”

Section: Mobile Multi Gnss Measuring Platformmentioning

confidence: 99%

Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements

Wilk

Koc

Specht

et al. 2020

Sensors

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The article discusses an important issue in connection with the technique of mobile Global Navigation Satellite System (GNSS) measurements of railway track coordinates, which is digital filtering performed to precisely determine railway track axes. For this purpose, a measuring technique is proposed which bases on the use of a measuring platform with a number of appropriately distributed GNSS receivers, where two of them determine the directional base vector of the platform. The receivers used in the research had high measuring frequency in the Real Time Kinematic (RTK) operating mode and enabled correction of the obtained results in post–processing. A key problem discussed in the article is the method for assessing the quality of the measurement results obtained from GNSS receivers, and their preparation for further processing making use of geometrically constrained parameters of the base vector and specialized digital filtering, among other elements, to precisely determining the track axis. The obtained results confirm the applicability of the used method of GNSS signal processing.

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Section: Mobile Multi Gnss Measuring Platformmentioning

confidence: 99%

Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements

Wilk

Koc

Specht

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…In the early stages of the GPS (Global Positioning System) system construction, some people put forward the idea of using GPS for attitude determination. As long as ambiguities can be fixed correctly, the attitude solutions based on high-accuracy carrier phase observations can reach considerable precision [4,5]. In recent years, the use of a GPS carrier-phase double differenced (DD) observations to calculate high-precision baseline vectors has developed rapidly, providing a guarantee for using GPS baseline vectors to realize attitude determination.…”

Section: Introductionmentioning

confidence: 99%

A Novel GNSS Attitude Determination Method Based on Primary Baseline Switching for A Multi-Antenna Platform

et al. 2020

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The global navigation satellite system (GNSS)-based attitude determination system has attracted more and more attention with the advantages of having simplified algorithms, a low price and errors that do not accumulate over time. However, GNSS signals may have poor quality or lose lock in some epochs with the influence of signal fading and the multipath effect. When the direct attitude determination method is applied, the primary baseline may not be available (ambiguity is not fixed), leading to the inability of attitude determination. With the gradual popularization of low-cost receivers, making full use of spatial redundancy information of multiple antennas brings new ideas to the GNSS-based attitude determination method. In this paper, an attitude angle conversion algorithm, selecting an arbitrary baseline as the primary baseline, is derived. A multi-antenna attitude determination method based on primary baseline switching is proposed, which is performed on a self-designed embedded software and hardware platform. The proposed method can increase the valid epoch proportion and attitude information. In the land vehicle test, reference results output from a high-accuracy integrated navigation system were used to evaluate the accuracy and reliability. The results indicate that the proposed method is correct and feasible. The valid epoch proportion is increased by 16.2%, which can effectively improve the availability of attitude determination. The RMS of the heading, pitch and roll angles are 0.52°, 1.25° and 1.16°.

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“…Global Navigation Satellite System (GNSS) has been widely used in positioning [14,15] and attitude determination [16,17]. Also, GNSS data has been used to monitor the atmosphere [18].…”

Section: Introductionmentioning

confidence: 99%

A Novel Approach for the Determination of the Height of the Tropopause from Ground-Based GNSS Observations

et al. 2020

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In this paper, we present a new method to calculate the height of the second lapse-rate tropopause (LRT2) using GNSS high-precision data. The use of GNSS data for monitoring the atmosphere is possible because as the radio signals propagate through the troposphere, they are delayed according to the refractive index of the path of the signal. We show that by integrating the vertical profile of the refractive index in the troposphere, we are able to determine the altitude of LTR2. Furthermore, as GNSS data is available from many stations around all latitudes of the globe and make up a network with high spatial and temporal resolution, we can monitor the diurnal cycle of the variables related to the refractive index of the path of the signal. A comparison between the heights of the LRT2 obtained with radiosonde data and with this novel method is presented in the paper, and it shows good agreement. The average difference found is ≤1 km for stations between the latitudes of 30°S and 30°N.

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Flight Tests of Error-Bounded Heading and Pitch Determination with Two GPS Receivers

Cited by 25 publications

References 20 publications

Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements

Digital Filtering of Railway Track Coordinates in Mobile Multi–Receiver GNSS Measurements

A Novel GNSS Attitude Determination Method Based on Primary Baseline Switching for A Multi-Antenna Platform

A Novel Approach for the Determination of the Height of the Tropopause from Ground-Based GNSS Observations

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