URA SUM and Difference

The input signal is in the form of a matrix, the columns of which correspond to the channels. The rows correspond to the signal samples.

Data types: Float16, Float32, Float64, Int8, Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64

Support for complex numbers: Yes

Initializing the input signal in the form of a non-negative real column vector.

Data types: Float16, Float32, Float64, Int8, Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64

The arrival directions of the signals returned as a non-negative real column vector. The angle of the arrival direction is the angle between the direction of the source and the axis of the antenna array. The angle measurement units are degrees. The length of the vector is equal to the number of signals specified by the Number of signals parameter. If it is not possible to detect peaks in the spectrum, NaN is returned as a result.

Data types: Float16, Float32, Float64, Int8, Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64

The propagation velocity of the signal in the form of a real positive scalar.

The default value is the speed of light: `299792458 m/s'.

The units of measurement are m/s.

You can use the physconst function to specify the speed of light.

Data types: Float16, Float32, Float64, Int8, Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64

The operating frequency of the system, set as a positive scalar.

The units of measurement are Hz.

Data types: Float16, Float32, Float64, Int8, Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64, Bool

The number of bits used to quantize the phase shift component of the beamformer or the weights of the control vector. Specify the number of bits as a non-negative integer.

A value of zero means that quantization is not performed.

The method for setting the array specified as `Array (no subarrays)'.

The type of antenna or acoustic element.

Available values:

The range of operating frequencies of an antenna or acoustic element in the form of a 1-by-2 row vector in the form of `[LowerBound,UpperBound]'. Outside of this frequency range, the element has no response.

The units of frequency measurement are Hz.

Dependencies

To use this parameter, set the Element type parameter to Isotropic Antenna, Cosine Antenna, or 'Omni Microphone'.

Select this option to mute the echo of the element.

When retracting, the echo at all azimuth angles exceeding ± 90° from the wide side is set to zero. The wide side is defined as the azimuth angle of 0° and the elevation angle of 0°.

Dependencies

To use this parameter, set the Element type parameter to Isotropic Antenna or `Omni Microphone'.

The direction of the zero radiation axis.

Dependencies

To use this parameter, set the Element type parameter to Cardioid Antenna.

Exponentials of the cosine model in the form of a non-negative scalar or a 1 by 2 real matrix of non-negative values. If the Exponent of cosine pattern is a 1 by 2 vector, then the first element is the exponent in the azimuth direction, and the second is in the elevation direction. With a scalar value of this parameter, the cosines in the azimuthal and elevation directions are raised to one power.

Dependencies

To use this parameter, set the Element type parameter to Cosine Antenna.

The range of operating frequencies of the antenna or acoustic element in the form of a vector row 1 on increasing actual values. The element has no response beyond the frequency range specified by the minimum and maximum elements of this vector. The units of frequency measurement are Hz.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna or `Custom Microphone'. To set the responses at these frequencies, use the Frequency responses (dB) parameter.

The frequency response of a custom antenna or custom acoustic element for frequencies defined by the parameter Operating frequency vector (Hz). The dimensions of the Frequency responses (dB) vector must match the dimensions of the vector specified by the Operating frequency vector (Hz) parameter.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna or `Custom Microphone'.

The coordinate system of the radiation pattern of the user antenna is indicated by az-el or phi-theta'. When specifying `az-el, the Azimuth angles (deg) and Elevations angles (deg) parameters are used to set the coordinates of the points of the directional pattern. When specifying the phi-theta parameter, the Phi angle (deg) and Theta angles (deg) parameters are used to set the coordinates of the part points.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

Azimuth angles, which will be used to calculate the radiation pattern of the antenna in the form of a vector-row 1 on P. P must be greater than 2. The azimuth angles must be in the range of −180° up to 180° inclusive and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna and the Input Pattern Coordinate System parameter to az-el.

Elevation angles at which it is necessary to calculate the radiation pattern in the form of a vector 1 on . it must be more than 2. The units of measurement of angles are degrees. Elevation angles should be in the range of −90° to 90° inclusive and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna and the Input Pattern Coordinate System parameter to az-el.

The value of the radiation pattern of the combined antenna, set as a matrix on or an array on on .

Value is equal to the value of the Operating frequency vector (Hz) parameter.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

The phase of the radiation pattern of the combined antenna, set as a matrix on or an array on on .

Value is equal to the value of the Operating frequency vector (Hz) parameter.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

If the parameter value is enabled, the radiation pattern of the antenna element is rotated to align with the normal of the array. If it is off, then the drawing of the element does not rotate.

If the antenna is used in an antenna array and the Input Pattern Coordinate System parameter has the value az-el, checking this box rotates the radiation pattern so that the x-axis of the element coordinate system points along the normal of the array. If there is no selection, the element template is used without rotation.

If the antenna is used in an antenna array and the Input Pattern Coordinate System parameter has the value phi-theta, checking this box rotates the radiation pattern so that the z axis of the element coordinate system points along the normal of the array.

Use this parameter together with the Array Normal parameter of the URA and UCA arrays.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna.

The angles of the radiation pattern solution in degrees.

Dependencies

To use this parameter, set the Element type parameter to Gaussian Antenna or `Sinc Antenna'.

The response frequencies of an acoustic element with a polar radiation pattern, specified as a real scalar or a real vector, are lines 1 on . The response frequencies are in the frequency range specified by the parameter Operating frequency vector (Hz).

Dependencies

To use this parameter, set the Element type parameter to Custom Microphone.

Set the response angles of the polar radiation pattern as a vector of 1 to . The angles are measured from the central axis of the acoustic element and must be in the range of −180° to 180° inclusive.

Dependencies

To use this parameter, set the Element type parameter to Custom Microphone.

Set the value of the polar radiation pattern of the user acoustic element in the form of a real vector-row 1 on , where — the number of frequencies specified in the parameter Polar pattern frequencies (Hz). The string represents the value of the polar radiation pattern measured at the corresponding frequency specified in the Polar pattern frequencies (Hz). The radiation pattern is measured in the azimuthal plane. In the azimuthal plane, the elevation angle is 0°, and the central axis is 0° in azimuth and 0° in elevation. The polar radiation pattern is symmetrical around the central axis. Based on the polar diagram, it is possible to construct a directional diagram of an acoustic element in three-dimensional space.

Dependencies

To use this parameter, set the Element type parameter to Custom Microphone.

Specify the size of the array as a positive integer or a vector of 1 by 2 positive integers.

The elements are indexed from top to bottom in the column and then in the following columns from left to right.

In this figure, with the size of the array [3,2], the array has three rows and two columns.

The distance between adjacent elements of the antenna array is set as a positive scalar.

The units of measurement are m.

Specify the grid of elements as Rectangular or `Triangular'.

Specify the normal of the array as x, y, or `z'. All elements of the URA and UCA arrays are placed in the yz, zx or xy planes, respectively, in the coordinate system of the array.

The change in the radiation pattern of the antenna array elements is set as a complex scalar or a complex vector 1 by , where — the number of elements in the array.

The narrowing coefficients, also called element weights, multiply the responses of the array elements. The cones change both the amplitude and the phase of the response to reduce the side lobes or the direction of the main axis of the response.

If the value of the Taper parameter is a scalar, then the same weight is applied to each element. If Taper is a vector, then a weight from the vector is applied to the corresponding sensor element. The number of weights must match the number of array elements.