A brief overview of what a steering vector is and why it is important to beamforming

The steering vector

The steering vector
_{}e represents the set of phase delays experienced by a plane wave as it reaches each element in an array of sensors. The mathematical representation of it is

Where
j is the imaginary unit,
k
_{n} is the wave number at the
n th sensor, and
x_{n} is the position vector of the
n th sensor in (
x ,
y ,
z ) coordinates. If the sensor array is two-dimensional, all z coordinates can be treated as 0 and omitted from the position vector in calculations. The wave number of a plane wave is its spatial frequency, or how many waves exist over a specified distance. It is a function of the frequency of the propagating wave, the material through which it is travelling, and its original location or direction of propagation. For our specific application, we actually use the angular wave number, which is written as (2π/λ) and indicates the number of wavelengths per 2π unit distance.

The role of the steering vector
e in beamforming is to define the assumed propagation direction of the source’s signal. In other words, it is the part of the beamforming process that chooses the direction in which the sensor array creates an output beam. Because
e is designed to cancel the phase shifts at each sensor in the array and the wave number
k must, by definition, assume a propagation direction, the steering vector has the effect of moving the each sensor’s output to a particular direction, thus focusing the beam.

Questions & Answers

Preparation and Applications of Nanomaterial for Drug Delivery

Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest.
Rafiq

Rafiq

what is differents between GO and RGO?

Mahi

what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.?
How this robot is carried to required site of body cell.?
what will be the carrier material and how can be detected that correct delivery of drug is done
Rafiq

Rafiq

if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION

Anam

analytical skills graphene is prepared to kill any type viruses .

Anam

Any one who tell me about Preparation and application of Nanomaterial for drug Delivery

The nanotechnology is as new science, to scale nanometric

brayan

nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale

Damian

Is there any normative that regulates the use of silver nanoparticles?