prefilter

This function takes a detection dataframe output from read_jsats or from
format_detects and filters out multipath signals (time between detections
&lt; 0.3 seconds) and spurious signals which do not occur within a specified
time frame of the last detection. For beacon tags, this time frame is 192
seconds, and for fish, this time is 120 seconds. Following this, the
dataframes are standardized so that all detection dataframes from any
technology type are identical and superfluous fields are removed.

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

prefilter function

<dl><dt>jsats_file</dt>
<dd>A dataframe which is the output from read_jstats() or
format_detects()</dd>
<dt>reference_tags</dt>
<dd>A vector of potential reference (beacon) tag IDs</dd></dl>

Arguments

Apply the "prefilter" to a Detection Dataframe — prefilter

<dl>

<dt>jsats_file</dt>
<dd>A dataframe which is the output from read_jstats() or
format_detects()</dd>


<dt>reference_tags</dt>
<dd>A vector of potential reference (beacon) tag IDs</dd>

</dl>

prefilter: Apply the "prefilter" to a Detection Dataframe

Description

Usage

Value

Arguments

Examples