Locating based on the distances to landmarks, using RANSAC to get a robust result.
https://www.cnblogs.com/YangyaoCHEN/p/8189290.html
sudo ./configure --prefix=/usr/local sudo make sudo make install
export C_INCLUDE_PATH=$C_INCLUDE_PATH:/usr/local/include export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:/usr/local/include export LIBRARY_PATH=$LIBRARY_PATH:/usr/local/lib export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/lib
gcc -o test_ransac_locator main.c -lm -lgsl -lgslcblas
./test_ransac_locator