Hatch filter

The Hatch smoothing algorithm is a special case, considering it only applies to Code Pseudo Range it can obviously only apply to Observation Data.

Use a focused filter to smooth only specific codes.

Example: apply the hatch filter to C1C observations only

rinex-cli \
    -f test_resources/CRNX/V3/ESBC00DNK_R_20201770000_01D_30S_MO.gz \
    -P L1C,L2W,C1C,C2W \
    -P hatch:c1c