Angle Doppler Response

The input signal is specified as a complex matrix of M by N or a complex vector of M by N. M is the number of elements of the antenna array or sublattice, if the antenna array supports the sublattices indicated on the Sensor Array panel. N is the number of data samples. N must be greater than or equal to two.

Data types: Float64

Support for complex numbers: Yes

The pulse repetition rate, set as a positive scalar.

Dependencies

To enable this port, set the Specify PRF as parameter to Input port.

Data types: Float64

The angle of the place, set as a scalar. The angle of the seat should be in the range from -90° to 90° inclusive.

The units of measurement are degrees.

Dependencies

To enable this port, set the Source of elevation angle parameter to Input port.

Data types: Float64

The angular Doppler response returned as a matrix P by Q. P is set by the Number of Doppler bins parameter, and Q is set by the Number of angle bins parameter.

Data types: Float64

Support for complex numbers: Yes

The angular values of the response matrix returned as a real scalar Q by 1. The angular values correspond to the columns of the angular Doppler response matrix. Q is set by the Number of angle bins parameter.

Data types: Float64

The values of the Doppler response matrix returned as a real vector P by 1. The Doppler values correspond to the rows of the angular Doppler response matrix. P is set by the Number of Doppler bins parameter.

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.: 299792458 m/s.

The units of measurement are m/s.

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 source of the PRF value, specified as Property or Input port.

The pulse repetition rate, PRF, is set as a positive scalar.

The units of measurement are Hz.

Set this parameter to the same value that is set in any library block used in modeling. Waveforms.

Dependencies

To enable this parameter, set the Specify PRF as parameter to Property.

The source of the positioning directions, specified as Property or Input port.

Parameter values Specify direction as:

The angle of the location used to calculate the angular Doppler response is given as a scalar. The angle should be in the range from -90° to 90°.

The units of measurement are degrees.

Example: 45

Dependencies

To enable this parameter, set the Source of elevation angle parameter to Property.

Data types: Float64

The number of angular samples used to calculate the angular Doppler response is set as a positive integer greater than two.

Example: 600

Data types: Float64

The number of samples in the Doppler region used to calculate the angular Doppler response is set as a positive integer greater than two.

Example: 128

Data types: Float64

The method of setting the antenna array, specified as Array (no subarrays).

The type of antenna or microphone specified as one of the following:

Specify the operating frequency range of the antenna or microphone as a 1 by 2 vector in the form [LowerBound,UpperBound]. The element has no response outside this frequency range.

The units of frequency measurement are Hz.

Dependencies

To enable this parameter, set the Element type parameter to Isotropic Antenna, Cardioid Antenna, Cosine Antenna, Gaussian Antenna, Sinc Antenna or Omni Microphone.

Specify the frequencies at which you want to set the frequency characteristics of the antenna and microphone, as a vector of lines 1 by L with increasing real values. The antenna or microphone has no response outside the frequency range specified by the minimum and maximum elements of this vector.

The units of frequency measurement are Hz.

Dependencies

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

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 enable this checkbox, set the Element type parameter to Isotropic Antenna or Omni Microphone.

Exponentials of the cosine model in the form of a non-negative scalar or a 1 by 2 real matrix of non-negative values.

Dependencies

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

The frequency response of the user antenna or user microphone for the frequencies defined by the parameter Operating frequency vector (Hz). The dimension of Frequency responses (dB) must match the dimension of the vector specified by the parameter Operating frequency vector (Hz).

Dependencies

To enable this parameter, set the Element type parameter to Custom Antenna or Custom Microphone.

The coordinate system of the custom antenna radiation pattern, set as az-el or phi-theta.

Dependencies

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

Specify the azimuth angles used to calculate the antenna radiation pattern as a vector of lines 1 by P. P must be greater than 2. The azimuthal angles should lie between -180° and 180° inclusive and be arranged in strictly ascending order.

Dependencies

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

Specify the angles of the location at which the radiation pattern will be calculated, in the form of a vector 1 by Q. Q must be greater than 2.

The units of measurement are degrees.

The angles of the seat should be in the range from -90° to 90° inclusive and arranged in strictly ascending order.

Dependencies

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

Phi-the angles of the points at which the antenna radiation pattern is set are given as a real vector 1 by P. P must be greater than 2.

The units of measurement are degrees.

The Phi angles should range from 0° to 360° and be arranged in strictly ascending order.

Dependencies

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

Theta-the angles of the points at which the antenna radiation pattern is set are given as a real vector 1 by Q. Q must be greater than 2.

The units of measurement are degrees.

The theta angles should range from 0° to 360° and be arranged in strictly ascending order.

Dependencies

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

The value of the radiation pattern of the combined antenna, set as a matrix Q by P or an array Q by P by L.

The L value is equal to the length of the Operating frequency vector (Hz) vector.

Dependencies

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

The radiation phase diagram of a combined antenna, defined as a matrix Q by P or an array Q by P by L.

The L value is equal to the length of the Operating frequency vector (Hz) vector.

Dependencies

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

Select this option to rotate the antenna element template according to the antenna array normal. If the checkbox is not checked, the element’s outline does not rotate.

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

Dependencies

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

The response frequencies of a microphone with a polar pattern, given as a real scalar or vector 1 on . The response frequencies are in the frequency range specified by the Operating frequency vector (Hz) vector.

Dependencies

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

Specify the response angles of the polar radiation pattern in the form of a vector 1 on . The angles are measured from the central axis of the microphone and should be in the range from -180° to 180° inclusive.

Dependencies

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

Set the value of the polar characteristic of the user microphone in the form of a matrix on . is the number of frequencies specified in the Polar pattern frequencies (Hz). is the number of angles specified in the Polar pattern angles (deg). Each row of the matrix represents the value of the polar radiation pattern measured at the corresponding frequency specified in Polar pattern frequencies (Hz) and all angles specified in Polar pattern angles (deg).

The pattern is measured in the azimuthal plane. In the azimuthal plane, the elevation angle is 0°, and the central axis of capture is 0° degrees in azimuth and 0° degrees in elevation. The radiation pattern is symmetrical around the central axis. Based on the polar radiation pattern, you can build a microphone radiation pattern in three-dimensional space.

Dependencies

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

Specify the type of antenna array elements as one of the following:

The number of elements in ULA or UCA antenna arrays, set as an integer greater than or equal to 2.

When setting values for the Specify sensor array as parameter Replicated subarray This parameter is applied to each antenna sublattice.

Dependencies

To enable this parameter, set the Geometry parameter to ULA or UCA.

The distance between adjacent elements of the antenna array:

Dependencies

To enable this parameter, set the Geometry parameter to ULA or URA.

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

Dependencies

The dimension of the URA antenna array, specified as a positive integer or a vector of positive integers 1 by 2.

For URA, the antenna array elements are indexed from top to bottom in the leftmost column, and then move to the next columns from left to right.

In this picture, the value is [3,2] The Array size parameter creates an antenna array consisting of three rows and two columns.

Dependencies

To enable this parameter, set the Geometry parameter to URA.

The grid of URA element positions, defined as Rectangular or Triangular.

Dependencies

To enable this parameter, set the Geometry parameter to URA.

The direction of the antenna array normal, indicated as x, y or z.

The elements of the flat antenna arrays lie in a plane orthogonal to the selected direction of the antenna array normal.

The viewing directions of the elements are indicated along the direction of the antenna array normal:

Dependencies

To enable this parameter, set the Geometry parameter to URA or UCA.

The radius of the UCA antenna array, set as a positive scalar.

Dependencies

To enable this parameter, set the Geometry parameter to UCA.

The positions of the elements in the conformal antenna array, given as a real matrix 3 on N, where N is the number of elements in the conformal antenna array. Each column of this matrix represents a coordinate [x;y;z] an element of the antenna array in the local coordinate system of the antenna array. The origin of the local coordinate system is (0,0,0).

The units of measurement are m.

If you set the Specify sensor array as parameter to Replicated subarray This parameter is applied to each antenna sublattice.

Dependencies

To enable this parameter, set the Geometry parameter to Conformal Array.

The direction of the normal vectors of the elements in a conformal antenna array, defined as a column vector 2 by 1 or a matrix 2 by N. N indicates the number of elements in the antenna array. For the matrix, each column sets the direction of the normal of the corresponding element in the form [azimuth;elevation] relative to the local coordinate system.

The local coordinate system aligns the positive x-axis with the direction of the normal to the conformal antenna array.

If the parameter value is a column vector 2 by 1, then the same direction is used for all elements of the antenna array.

If the Specify sensor array as parameter is set to Replicated subarray This parameter is applied to each antenna sublattice.

You can use the Element positions (m) parameters and Element normals (deg) to represent any arrangement in which pairs of elements differ by certain transformations. Transformations can combine translation, azimuth rotation, and elevation rotation. However, you cannot use transformations that require rotation relative to the direction of the normal.

Dependencies

To enable this parameter, set the Geometry parameter to Conformal Array.

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.

Set the choice of the antenna sublattice as a matrix of M by N. M_ is the number of antenna sublattices, and N_ is the total number of elements in the antenna array.

Each row of the matrix represents an antenna sublattice, and each entry in the row indicates that the element belongs to the antenna array.

If the record is zero, the element does not belong to the antenna sublattice. A non-zero entry is a complex weighting factor applied to the corresponding element. Each row must contain at least one non-zero entry.

The phase center of each antenna sublattice is located in the geometric center of the antenna sublattice. The geometric center of the antenna sublattice depends on the Subarray definition matrix and Geometry parameters.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Partitioned array.

The antenna sublattice control method, defined as one of:

Meaning Phase or Time opens the Steer input port on the blocks of the narrowband receiving antenna array, narrowband transmitting antenna array, broadband receiving antenna array, broadband transmitting antenna array, block Constant Gamma Clutter and the GPU Constant Gamma Clutter block.

Meaning Custom opens the WS input port on the blocks Narrowband Receive Array, Narrowband Transmit Array, Wideband Receive Array, Wideband Transmit Array, Constant Gamma Clutter and GPU Constant Gamma Clutter.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Partitioned array or Replicated subarray.

The operating frequency of phase shifts in the antenna sublattice, given as a positive real scalar.

The units of measurement are Hz.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Partitioned array or Replicated subarray and for the Subarray steering method parameter, the value Phase.

The phase shift quantization bits in the antenna sublattice, specified as a non-negative integer. A value of zero means that quantization is not performed.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Partitioned array or Replicated subarray and for the Subarray steering method parameter, the value Phase.

Specify the location of the replicated antenna sublattices as Rectangular or Custom.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Replicated subarray.

The grid dimension of a rectangular antenna sublattice is set as a single positive integer or as a vector of positive integers 1 by 2 rows.

The figure shows how an URA antenna sublattice of size 3 by 2 can be reproduced using Grid size [1,2].

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Replicated subarray and for the Subarrays layout parameter, the value Rectangular.

The distance between the antenna sublattices on a rectangular grid, defined as a positive real scalar, a vector of 1 by 2 positive real values, or Auto.

The units of measurement are m.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Replicated subarray and for the Subarrays layout parameter, the value Rectangular.

The positions of the antenna sublattices in the user grid, defined as a 3 N real matrix, where N is the number of antenna sublattices in the antenna array. Each column of the matrix represents the position of one antenna sublattice in the local coordinate system of the antenna array. The coordinates are expressed as [x; y; z].

The units of measurement are m.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Replicated subarray and for the Subarrays layout parameter, the value Custom.

Specify the directions of the antenna sublattices normals in the antenna array. The value of this parameter is a matrix 2 by N, where N is the number of antenna sublattices in the antenna array. Each column of the matrix sets the direction of the normal of the corresponding antenna sublattice in the form [azimuth;elevation].

The units of measurement are degrees.

The angles are determined relative to the local coordinate system.

You can use the Subarray positions and Subarray normals parameters to represent any arrangement in which pairs of antenna sublattices differ by certain transformations. Transformations can combine translation, azimuth rotation, and elevation rotation. However, you cannot use transformations that require rotation relative to the normal.

Dependencies

To enable this parameter, set the Specify sensor array as parameter to Replicated subarray, and for the Subarrays layout parameter , the value Custom.