Beamspace ESPRIT DOA

The input signal is a matrix of size on , where — the number of samples in the signal, and — the number of channels.

Data types: Float64

Support for complex numbers: Yes

Angles that determine the arrival directions of the signals, returned as a vector with real values by 1. The units of measurement are degrees.

Data types: Float64

The propagation velocity of the signal in the form of a real positive scalar. The default value is the speed of light.: 3e8 m/s.

The units of measurement are m/s.

The carrier frequency of the system, set as a positive scalar. The units of measurement are Hz.

The number of signals in the form of a positive integer scalar.

Sets the number of (non-negative integer) averages that provide spatial smoothing for estimating the covariance matrix. Each increase in this parameter adds one additional coherent source, which in turn reduces the effective number of elements by one. The maximum value of this parameter is , where – the number of elements in the ULA.

Specify the least squares method used for ESPRIT:

Sets the direction of the center of the fan-out rays in degrees as a real scalar, the value of which lies in the range from −90° to 90°.

Sets the number of ray sources:

The number of rays is given as a positive integer scalar. The fewer the number of rays, the lower the computational cost.

Dependencies

To use this parameter, set the Source of number of beams parameter to Property.

The method of setting the antenna array element.

The type of antenna array element.

Available values:

The range of operating frequencies of the antenna array element in the form of a vector row 1 by 2 in the form of [LowerBound,UpperBound]. The element has no response outside this frequency range. 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.

Set this flag to exclude radiation into the rear hemisphere. The response from the rear hemisphere at all azimuth angles outside the ±90° range from the wide side is set to zero. The wide-angle direction 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 axis is along the zero radiation.

Dependencies

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

The exponent of the exponent 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 direction of the azimuth, and the second is in the direction of the angle of the place. 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 array of operating frequencies of the antenna array 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 the user elements of the antenna array is determined 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 choice of the coordinate system of the radiation pattern of the user antenna is indicated az-el or phi-theta. When choosing az-el The Azimuth angles (deg) and Elevation angles (deg) parameters are used to set the coordinates of the directional pattern points. When specifying a parameter phi-theta 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.

The values of the azimuth angles, which will be used to calculate the antenna pattern in the form of a vector row 1 on . it must be more than 2. The azimuth angles should 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 for the parameter Input Pattern Coordinate System — az-el.

The values of the angles of the location 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. The angles of the seat 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 for the parameter Input Pattern Coordinate System — az-el.

The angular coordinates of the Phi points where the antenna radiation pattern is set. They are defined as a real vector-row 1 on . it must be more than 2. The units of measurement of angles are degrees. Angle values Phi They should be in the range from 0° to 360° and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna, and for the parameter Input Pattern Coordinate System — phi-theta.

The angular coordinates of the Theta points where the antenna radiation pattern is set. They are defined as a real vector-row 1 on . it must be more than 2. The units of measurement of angles are degrees. Angle values Theta They should be in the range from 0° to 180° and arranged in strictly ascending order.

Dependencies

To use this parameter, set the Element type parameter to Custom Antenna, and for the parameter Input Pattern Coordinate System — phi-theta.

The value of the antenna pattern, 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 radiation pattern of the combined antenna, defined 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, then the radiation pattern of the antenna element is rotated to align with the normal of the array. If turned off, then the drawing of the element does not rotate.

If the antenna is used in an antenna array and the parameter Input Pattern Coordinate System is set to az-el If this flag is selected, the radiation pattern rotates so that the x-axis of the element’s 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 parameter Input Pattern Coordinate System is set to phi-theta If this flag is selected, the radiation pattern rotates so that the z axis of the element’s 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 beam width of the antenna pattern in degrees.

Dependencies

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

The frequency values for the polar radiation pattern are set as a real scalar or a real vector-row 1 on . The 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.

The angle values for the polar radiation pattern of the microphone are set as a vector . The angles are measured from the central axis of the microphone and should 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 microphone as 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 microphone directional pattern in three-dimensional space.

Dependencies

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

The number of elements for the ULA antenna array is set as an integer greater than or equal to two.

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

The direction of the ULA linear axis, defined as y, x or z. All elements of the ULA grid are uniformly distributed along this axis in the local grid coordinate system.

Dependencies

To enable this parameter, set the Geometry parameter to ULA. This option is also enabled when the block supports only ULA arrays.

Complex weighting coefficients for antenna array elements, given as a complex scalar, a complex string vector on or a complex column vector on , where It represents the number of antenna array elements. Weighting factors are applied to each antenna element of the antenna array and change the amplitude and phase of the received data.