Convert Normalized Doppler Frequencies to Doppler Frequencies

This function converts normalized Doppler frequencies into their corresponding Doppler frequencies (in Hz) within a SeaSondeR object.

Usage

seasonder_NormalizedDopplerFreq2DopplerFreq(
  seasonder_cs_object,
  doppler_values
)

Arguments

seasonder_cs_object

A SeaSondeR cross-spectral object containing metadata about the Doppler bins.

doppler_values

A numeric vector specifying the normalized Doppler frequencies to be converted into Doppler frequencies (Hz).

Value

A numeric vector of Doppler frequencies (in Hz) corresponding to the input normalized Doppler frequencies.

Details

The function follows these steps:

1. Calls seasonder_NormalizedDopplerFreq2Bins to convert the input normalized Doppler frequencies into Doppler bin indices.

2. Calls seasonder_Bins2DopplerFreq to obtain the corresponding Doppler frequencies in Hz.

The relationship between the normalized and absolute Doppler frequencies is defined as: $$f_{doppler} = f_{norm} \times f_{bragg}$$ where:

• \(f_{doppler}\) is the Doppler frequency in Hz,

• \(f_{norm}\) is the normalized Doppler frequency,

• \(f_{bragg}\) is the Bragg frequency, computed based on radar wavelength.

See also

seasonder_NormalizedDopplerFreq2Bins for converting normalized Doppler frequencies to bin indices. seasonder_Bins2DopplerFreq for converting bin indices to Doppler frequencies in Hz.