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
`phased.LinearFMWaveform`	Linear FM pulse waveform
`phased.NonlinearFMWaveform`	非线性调频脉冲波形
`phased.PhaseCodedWaveform`	Phase-coded pulse waveform
`phased.RectangularWaveform`	Rectangular pulse waveform
`phased.SteppedFMWaveform`	Stepped FM pulse waveform

Functions

`nlfmspec2freq`	Instantaneous frequency of nonlinear frequency-modulated waveform
`spectrogram`	Spectrogram using short-time Fourier transform

Blocks

Custom FM Waveform	Custom FM pulse waveform
Linear FM Waveform	Linear FM (LFM) pulse waveform
Nonlinear FM Waveform	非线性调频脉冲波形
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).