Sift

Sift is a drifting object tracking program for use in search and rescue missions. It was developed for the tracking and retrieval of the DARE Stratos IV mission nosecone capsule.

OpenDrift is used for the drift simulation, using NetCDF sea current data obtained from the Copernicus Earth Observation Program of the European Space Agency.

OpenDrift install

cd depdendencies
cd opendrift
conda config --add channels conda-forge
conda env create -f environment.yml
conda activate opendrift
pip install -e .

Parameters

Open src/__main__ to edit:

• Last known nosecone coordinate from radar.
• Radar nosecone positioning uncertainty (implementation: 2 sigma radius).
• Retrieval ship coordinates.
• Retrieval ship cruise speed.
• Log output.

Run

conda activate opendrift
cd src
python3 -m sift

Output

SHIP     :: Distance to LKNRC    :: [Km]
31.10
SHIP     :: Travel time to LKNRC :: [min]
67.17

NOSECONE :: LONGITUDE forecast   :: [deg]
-7
0'
25.74''

NOSECONE :: LATITUDE forecast    :: [deg]
36
27'
17.74''

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