seasonder_NormalizedDopplerFreq2DopplerFreq: Convert Normalized Doppler Frequencies to Doppler Frequencies

In SeaSondeR: Radial Metrics from SeaSonde HF-Radar Data

Convert Normalized Doppler Frequencies to Doppler Frequencies

Description

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).

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.

Value

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

See Also

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

SeaSondeR documentation built on June 8, 2025, 10:50 a.m.