Convert Doppler Frequencies to Normalized Doppler Frequencies

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

Usage

seasonder_DopplerFreq2NormalizedDopplerFreq(
  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 Doppler frequencies (in Hz) to be converted into normalized Doppler frequencies.

Value

A numeric vector of normalized Doppler frequencies corresponding to the input Doppler values.

Details

The function follows these steps:

1. Calls seasonder_DopplerFreq2Bins to convert the input Doppler frequencies into Doppler bin indices.

2. Calls seasonder_Bins2NormalizedDopplerFreq to obtain the corresponding normalized Doppler frequencies.

The normalized Doppler frequency is computed 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.

This function ensures consistency by mapping input frequencies to their closest bin representation before normalization.

See also

seasonder_DopplerFreq2Bins for converting Doppler frequencies to bin indices. seasonder_Bins2NormalizedDopplerFreq for converting bin indices to normalized frequencies.