diff --git a/applications/lofar2/model/readme_lofar2_model.txt b/applications/lofar2/model/readme_lofar2_model.txt new file mode 100644 index 0000000000000000000000000000000000000000..6b77d4f70bcad842a440e596855dd8408d011a49 --- /dev/null +++ b/applications/lofar2/model/readme_lofar2_model.txt @@ -0,0 +1,33 @@ +This directory contains scripts and documents for modelling DSP aspects of LOFAR2.0: + +References: + +[1] = found by Andre Gunst from LOFAR1 +[2] = https://svn.astron.nl/UniBoard_FP7/RadioHDL/trunk/applications/apertif/matlab/apertif_matlab_readme.txt +[3] = https://support.astron.nl/jira/browse/L2SDP-212 +[4] = https://git.astron.nl/desp/hdl/-/blob/master/libraries/dsp/verify_pfb/tb_tb_verify_pfb_wg.vhd + + +1) Original LOFAR1 scripts + +- git/hdl/libraries/dsp/filter/src/hex/Coeffs16384Kaiser-quant.dat : Original PFIR filter coefficients from LOFAR 1.0 subband filterbank + (16 tap, 1024 point FFT), the script that created these PFIR + coefficients is not available anymore (For Apertif Erko looked in old + repositories back to 2005 of Lofar software and Station firmware + but could not find it.) + +- pfs_coeff_final.m [1] : creates Coefficient_16KKaiser.dat, but using e.g. meld shows that these do differ slightly from + Coeffs16384Kaiser-quant.dat that are actually used in LOFAR1. + + + +2) Original LOFAR1 documents + +- lowbitfir.pdf, 2001 [1] : Simulation Results of Low Bit FIR Filters for ALMA +- quanreq.pdf, 2002 [1] : Modeling the Effects of Re-quantization for ALMA-FC: Cascading of Degradation Factors + + +3) LOFAR2.0 + +- Jira story L2SDP-212 [3] : Investigate SDP firmware quantization +- tb_tb_verify_pfb_wg.vhd, 2021 [4] : VHDL simulation of LOFAR1 PFB2 and APERTIF WPFB for LOFAR2.0