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RTSA Suite PRO Release v2.2

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IQ Power Spectrum

The IQ Power Spectrum block converts I/Q data via real-time FFT to SPECTRA:

IQ Power Spectrum Block

Left hand side Input:

  • IQ

Right hand side Output:

  • SPECTRA

 

The IQ Power Spectrum block should be one of the most used ones. It converts I/Q data in real-time to SPECTRA using an highly optimized FFT algorithm. Using SPECTRA instead of I/Q highly reduces the CPU load needed to later on display and/or process the spectrum data.

The FFT Size can be adjusted from 16 to 1 Million (depending on license). Optional the FFT size is also adjustable via the number of Bins.

Furter on you can switch the IQ Power Spectrum block to a more flexible multi adjustment mode (e.g. for control with further docked blocks):

  • Step & Frequency
  • RBW
  • RBW & FFT
  • Step & Frequency & RBW

The FFT Overlapping is fully adjustable (up to 99,9%) same for the power range (60 to 200dB).

The following FFT Window functions are available:

  • Hamming
  • Hann
  • Uniform
  • Blackmann
  • Blackmann Harris
  • Blackmann Harris 7
  • Flat Top
  • Lanczos
  • Gaussion 0.5
  • Gaussion 0.4
  • Gaussion 0.3
  • Gaussion 0.2
  • Gaussion 0.1
  • Kaiser 6
  • Kaiser 12
  • Kaiser 18
  • Kaiser 36
  • Kaiser 72
  • Tukey 0.1
  • Tukey 0.3
  • Tukey 0.5
  • Tukey 0.7
  • Tukey 0.9

Some interesting FFT tweaking features like FFT Skip Window (The opposite from FFT overlap. Removes FFT windows e.g. if you need to save CPU power or if you can/want to reduce the SPECTRA data rate), Super Sample (Our unique "oversampling", reducing the overal noise floor), Drop Partial (ignors I/Q data at the end of a segment that dont fit into a window (Hopping mode or IsoLOG)) an adjustable Processing Latency (100µs to 100ms) and finally a Noise Compensation is integrated:

IQ Power Spectrum Settings

 

A typical Screenshot using the IQ Power Spectrum block:

IQ Power Spectrum Block in Action

 

Comparing our unique Super Sample and regular mode to see the reduced noise floor:

IQ Super Sample Mode reducing the Noise Floor

Typical Mission:

IQ Power Spectrum Typical Mission

FFT Super Sample Mode