Pulsed Waveforms

Amplitude, phase, and frequency-modulated pulse waveforms

The Phased Array System Toolbox™ provides several narrowband pulsed waveforms. Waveforms in the toolbox are all complex baseband signals. Use pulsed waveforms in radar and sonar applications.

Objects

`phased.CustomFMWaveform`	Custom FM pulse waveform (Since R2023a)
`phased.LinearFMWaveform`	Linear FM pulse waveform
`phased.NonlinearFMWaveform`	Nonlinear FM pulse waveform (Since R2023a)
`phased.PhaseCodedWaveform`	Phase-coded pulse waveform
`phased.RectangularWaveform`	Rectangular pulse waveform
`phased.SteppedFMWaveform`	Stepped FM pulse waveform

Functions

`apaseq`	Pseudorandom binary maximum length sequence (Since R2024a)
`legendreseq`	Legendre sequence with perfect periodic autocorrelation function (Since R2024a)
`mlseq`	Pseudorandom binary maximum length sequences (Since R2024a)
`nlfmspec2freq`	Instantaneous frequency of nonlinear frequency-modulated waveform (Since R2023a)
`pncode`	Generate polyphase P(n,k) code (Since R2024a)
`shapespectrum`	Generate waveform with desired frequency spectrum shape (Since R2024b)
`sidelobelevel`	Peak and integrated side-lobe levels (Since R2024b)
`spectrogram`	Spectrogram using short-time Fourier transform

Blocks

Custom FM Waveform	Custom FM pulse waveform (Since R2023a)
Linear FM Waveform	Linear FM (LFM) pulse waveform
Nonlinear FM Waveform	Nonlinear FM pulse waveform (Since R2023a)
Phase Coded Waveform	Phase-coded pulse waveform
Rectangular Waveform	Rectangular pulse waveform
Stepped FM Waveform	Stepped FM pulse waveform

Apps

Pulse Waveform Analyzer

Analyze performance characteristics of pulsed, frequency-modulated, and phase-coded waveforms

Topics

Pulsed Waveforms

Rectangular Pulse Waveforms
Simplest waveform has constant amplitude over pulse duration.
Linear Frequency Modulated Pulse Waveforms
LFM pulse waveforms increase time-bandwidth product and improve target detection.
Stepped FM Pulse Waveforms
Stepped frequency pulse waveforms increase time-bandwidth product and improve target detection.
Phase-Coded Waveforms
Phase-coded waveforms have good range resolution.
Waveforms with Staggered PRFs
Staggered pulse-repetition frequency waveforms remove Doppler ambiguity.

Standards

Standards and Conventions
This section introduces the concept of baseband signals and defines the local and global coordinate systems used in the toolbox.
Units of Measure and Physical Constants
Phased Array System Toolbox uses the International System of Units (SI).