Roll angle measurement using a polarization scanning reference source

Dhadwal, Harbans S.; Rastegar, J.; Kankipati, Varun

doi:10.1117/12.2051065

Cited by 2 publications

(3 citation statements)

References 8 publications

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“…However, the technique provides a full-3D solution. As described in [8][9] , accurate angle measurements are possible through the use of a SPRS source and a PGCOS. The unique modulation scheme allows very accurate measurements of the rotation between the two polarization states of the SPRS and the PGCOS.…”

Section: Polarized Rf Geometrical Cavity Orientation Sensors (Pgcos)mentioning

confidence: 99%

Non-GPS full position and angular orientation onboard sensors for moving and stationary platforms

et al. 2016

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Angular orientation of both mobile and stationary objects continues to be an ongoing topic of interest for guidance and control as well as for non-GPS based solutions for geolocations of assets in any environment. Currently available sensors, which include inertia devices such as accelerometers and gyros; magnetometers; surface mounted antennas; radars; GPS; and optical line of sight devices, do not provide an acceptable solution for many applications, particularly for gun-fired munitions and for all-weather and all environment scenarios. A robust onboard full angular orientation sensor solution, based on a scanning polarized reference source and a polarized geometrical cavity orientation sensor, is presented. The full position of the object, in the reference source coordinate system, is determined by combining range data obtained using established time-of-flight techniques, with the angular orientation information.

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Section: Polarized Rf Geometrical Cavity Orientation Sensors (Pgcos)mentioning

confidence: 99%

Non-GPS full position and angular orientation onboard sensors for moving and stationary platforms

et al. 2016

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“…The fully electronic Scanning Polarized RF Reference Source (SPRS) can be constructed from two polarized RF waves [6][7] . The innovative approach transmits two amplitude modulated waves, which produce a time varying power fluctuation at the PGCOS.…”

Section: Scanning Polarized Rf Reference Source (Sprs)mentioning

confidence: 99%

“…Such smart antennas have serious angular resolution shortcomings and are impractical for precise angle measurements. Here, we describe a method for locating both the position and angle of an object based on the cavity sensors 5 and scanning polarized reference sources [6][7] . While both can be used separately and integrated into other applications, together they form a highly accurate and robust angle and position location system that can be operated at signal-to-noise ratios near unity.…”

Section: Introductionmentioning

confidence: 99%

A novel method for full position and angular orientation measurement of moving objects

et al. 2015

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Angular orientation of an object such as a projectile, relative to the earth or another object such as a mobile platform continues to be an ongoing topic of interest for guidance and/or steering. Currently available sensors, which include inertia devices such as accelerometers and gyros; magnetometers; surface mounted antennas; radars; GPS; and optical line of sight devices, do not provide an acceptable on-board solution for many applications, particularly for gun-fired munitions. We present a viable solution, which combines open-aperture sensors with custom designed radiation patterns and one or more amplitude modulated polarization scanning reference sources. Subsequently, the sensor system presents a new approach to angle measurements, with several key advantages over traditional cross-polarization based rotation sensors. Primarily, angular information is coded into a complex spatiotemporal pattern, which is insensitive to power fluctuations caused by environmental factors, while making the angle measurement independent of distance from the referencing source. Triangulation, using multiple sources, may be also used for onboard position measurement. Both measurements are independent of GPS localization; are direct and relative to the established local referencing system; and not subject to drift and/or error accumulation. Results of laboratory tests as well as field tests are presented.

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Roll angle measurement using a polarization scanning reference source

Cited by 2 publications

References 8 publications

Non-GPS full position and angular orientation onboard sensors for moving and stationary platforms

Non-GPS full position and angular orientation onboard sensors for moving and stationary platforms

A novel method for full position and angular orientation measurement of moving objects

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