Phased Array System Toolbox / Detection
The Doppler Estimator block estimates the Doppler (radial speed) of target detections obtained from the radar response data.
Resp— Doppler-processed response data cube
Doppler-processed response data cube, specified as a complex-valued P-by-1 column vector, a complex-valued M-by-P matrix, or a complex-valued M-by-N-by-P array.M represents the number of range samples, N is the number of sensor elements or beams, and P is the number of Doppler bins.
The size of the first dimension of the input matrix can vary to simulate a changing signal length. A size change can occur, for example, in the case of a pulse waveform with variable pulse repetition frequency.
Complex Number Support: Yes
Doppler— Doppler grid values along Doppler dimension
Doppler grid values along the Doppler dimension, specified as
a real-valued P-by-1 column vector.
the Doppler values corresponding to the Doppler dimension of data
input to the Resp port. Doppler values must be
monotonically increasing and equally spaced. Units are in hertz or
Est— Doppler estimate
Doppler estimates, returned as a real-valued K-by-1 column vector.
When Enable cluster ID input is not selected, each Doppler estimate corresponds to one of the columns in the DetIdx input port. Then K equals the number of elements, Q, of DetIdx.
When Enable cluster ID input is selected, each Doppler estimate corresponds to one of the cluster IDs in the Clustersinput port. Then K equals the number of unique cluster IDs.
Var— Doppler estimation variance
Doppler estimation variance, returned as a positive, real-valued K-by-1 column vector, where K is the dimension of Est. Each element of Var corresponds to an element of Est. The estimator variance is computed using the Ziv-Zakai bound.
To enable this port, select the Output variance for parameter estimates parameter.
Number of pulses in Doppler processed waveform— Number of pulses
2(default) | positive integer
Number of pulses in Doppler processed waveform, specified as a positive integer.
To enable this parameter, select the Output variance
for parameter estimates
Output variance for parameter