Publication

Instantaneous DoA Estimation Using Poynting Vector and a Vector Sensor

Anja Skrivervik
2025

Abstract

The direction of arrival (DoA) estimation performance of a vector sensor using the instantaneous Poynting vector is evaluated in relation to the realized element patterns of the vector sensor. Up to six amplitudes, one amplitude per field component of the impinging wave, are measured in the vector sensor in a time instance and yield a DoA estimate via the instantaneous Poynting vector based on the direction of maximum incoming power. Proportional amplitude readings with respect to the impinging fields are necessary to correctly estimate the angular coordinates of the impinging signal, making the study of element pattern anisotropy in the vector sensor critical for the DoA estimation error.

Official source

https://infoscience.epfl.ch/entities/publication/93fff923-fc21-4306-bf66-1a94d09be074

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Anja Skrivervik
2025

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/93fff923-fc21-4306-bf66-1a94d09be074

About this result

Related concepts (32)

Poynting vector

In physics, the Poynting vector (or Umov–Poynting vector) represents the directional energy flux (the energy transfer per unit area per unit time) or power flow of an electromagnetic field. The SI unit of the Poynting vector is the watt per square metre (W/m2); kg/s3 in base SI units. It is named after its discoverer John Henry Poynting who first derived it in 1884. Nikolay Umov is also credited with formulating the concept.

Angular momentum

In physics, angular momentum (sometimes called moment of momentum or rotational momentum) is the rotational analog of linear momentum. It is an important physical quantity because it is a conserved quantity – the total angular momentum of a closed system remains constant. Angular momentum has both a direction and a magnitude, and both are conserved. Bicycles and motorcycles, flying discs, rifled bullets, and gyroscopes owe their useful properties to conservation of angular momentum.

Angular velocity

In physics, angular velocity (symbol ω, sometimes Ω), also known as angular frequency vector, is a pseudovector representation of how the angular position or orientation of an object changes with time, i.e. how quickly an object rotates (spins or revolves) around an axis of rotation and how fast the axis itself changes direction. The magnitude of the pseudovector, , represents the angular speed (or angular frequency), the rate at which the object rotates (spins or revolves).

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Instantaneous DoA Estimation Using Poynting Vector and a Vector Sensor

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