second_filter_4h

This function takes any acoustic receiver detection dataframe generated from
the add_fish() function and filters it a second time to remove any remaining
multipath detections. Then applies an algorithm to assess and filter all
remaining detections based on a four hit filter.

Filtering of raw acoustic telemetry transmissions
from three acoustic telemetry companies (ATS, Lotek, Teknologic). The
filtering steps check for false positives caused by reflected transmissions
from surfaces and false pings from other noise generating equipment. The
filter is unique for each technology type. The package was written in
concert with the Interagency Telemetry Advisory Group (iTAG) and makes use
of the JSATS California Fish Tracking Database:
<https://oceanview.pfeg.noaa.gov/CalFishTrack/>.

Taylor Spaulding

filteRjsats

Filter Raw JSATS Acoustic Telemetry Files from Lotek, ATS,
Teknologic

Arnold Ammann

Travis Hinkelman

second_filter_4h function

<dl><dt>fish_file</dt>
<dd>a dataframe of detections retrieved from add_fish()</dd></dl>

Arguments

Four Hit Filter for Any Detection File — second_filter_4h

<dl>

<dt>fish_file</dt>
<dd>a dataframe of detections retrieved from add_fish()</dd>

</dl>

second_filter_4h: Four Hit Filter for Any Detection File

Description

Usage

Value

Arguments

Examples