Coerces a dataset into a echosounder dataset.

as.echosounder(
  time,
  depth,
  a,
  src = "",
  sourceLevel = 220,
  receiverSensitivity = -55.4,
  transmitPower = 0,
  pulseDuration = 400,
  beamwidthX = 6.5,
  beamwidthY = 6.5,
  frequency = 41800,
  correction = 0
)

Arguments

time

times of pings

depth

depths of samples within pings

a

matrix of amplitudes

src

optional string indicating data source

sourceLevel

source level, in dB (uPa at 1m), denoted sl in reference 1 p15, where it is in units 0.1dB (uPa at 1m)

receiverSensitivity

receiver sensitivity of the main element, in dB(counts/uPa), denoted rs in reference 1 p15, where it is in units of 0.1dB(counts/uPa)

transmitPower

transmit power reduction factor, in dB, denoted tpow in reference 1 p10, where it is in units 0.1 dB.

pulseDuration

duration of transmitted pulse in us

beamwidthX

x-axis -3dB one-way beamwidth in deg, denoted bwx in reference 1 p16, where the unit is 0.2 deg

beamwidthY

y-axis -3dB one-way beamwidth in deg, denoted bwx in reference 1 p16, where the unit is 0.2 deg

frequency

transducer frequency in Hz, denoted fq in reference 1 p16

correction

user-defined calibration correction in dB, denoted corr in reference 1 p14, where the unit is 0.01dB.

Value

An echosounder object.

Details

Creates an echosounder file. The defaults for e.g. transmitPower are taken from the echosounder dataset, and they are unlikely to make sense generally.

See also