Signal Analyzer

The Signal Analyzer application in WSDR.io allows users to analyze digital and analog signals, supporting multiple modulation types and advanced visualization features. It can process both live signals and pre-recorded files.

1. Features

WSDR currently supports FM, GMSK, and FSK modulation, with ongoing development for additional modulations.

Multiple Signal Views:

  • IQ View – In-phase & Quadrature representation

  • Analog View – Time-domain signal visualization

  • Power View – Signal strength over time

  • Demodulated View – Extracted baseband signal

Current Decoding Options:

  • BTLE (Bluetooth Low Energy)

  • NRF (Nordic Semiconductor RF protocol)

Recording & File Loading:

  • Record a live signal directly from SDR

  • Load a pre-recorded file from a PC or Cloud Storage

2. Getting Started

../_images/signal_anlz.jpg

A. Opening a Signal Source

  • Go to Applications and select Signal Analyzer

  • Choose a signal source: - Live Signal – Direct from SDR device - Pre-Recorded File – Load from PC or Cloud Storage

B. Configuring Signal Parameters

  • Set the Rate (e.g., 100 kHz)

  • Select Modulation Type (FM, GMSK, or FSK)

  • Adjust Signal Processing Options: - Samples/Symbol – Defines signal resolution - Modulation Index – Adjusts signal characteristics - Threshold & Error Settings – Useful for decoding

Choose the Signal View:

  • IQ View

  • Analog View

  • Power View

  • Demodulated View

C. Decoding and Analyzing the Signal

  • Enable Vector Diagram to visualize the constellation

  • Select Data Format: Bits or Symbols

  • Choose Decoder: - BTLE - NRF

  • Specify the Channel (e.g., 37 for Bluetooth)

  • View the decoded bits in the bottom section

D. Recording and Saving Data

  • Click Record Signal to start recording live data

  • To load a file, select from PC or Cloud Storage

  • Store analyzed signals in Cloud Storage for later use

3. Additional Notes

  • Ensure the correct modulation type is selected for accurate decoding

  • The vector diagram helps visualize signal integrity

  • Cloud Storage Integration allows seamless access across WSDR.io applications