Failed to acquire signal on identical file and config to successful gnss-sdr run

[asazernik]

I'm shifting from gnss-sdr to PocketSDR for working with recorded IQ files. As part of validation, I'm trying to reproduce a working gnss-sdr configuration in PocketSDR i.e. run PocketSDR with the same parameters and on the same input file as the gnss-sdr run and see if I get similar results.

Unfortunately, when I try this PocketSDR fails acquire satellites.

Is there any obvious mistake in my translation of gnss-sdr config to PocketSDR command, or some preprocessing step I need to take first?

PocketSDR command line:

python/pocket_acq.py -f 4 -sig L1CA -prn 1-63 -d 10000 -tint 1 /home/asa/Downloads/gpsl1.iq

GNSS-sdr signal and tracking configurations:

;######### GLOBAL OPTIONS ##################
GNSS-SDR.internal_fs_sps=4000000

;######### SIGNAL_SOURCE CONFIG ############
SignalSource.implementation=File_Signal_Source
SignalSource.filename=/home/asa/Downloads/gpsl1.iq
SignalSource.item_type=ibyte
SignalSource.sampling_frequency=4000000

;######### SIGNAL_CONDITIONER CONFIG ############
SignalConditioner.implementation=Signal_Conditioner

;######### DATA_TYPE_ADAPTER CONFIG ############
DataTypeAdapter.implementation=Ibyte_To_Complex

;######### INPUT_FILTER CONFIG ############
InputFilter.implementation=Freq_Xlating_Fir_Filter
InputFilter.decimation_factor=1
InputFilter.input_item_type=gr_complex
InputFilter.output_item_type=gr_complex
InputFilter.taps_item_type=float
InputFilter.number_of_taps=5
InputFilter.number_of_bands=2
InputFilter.band1_begin=0.0
InputFilter.band1_end=0.85
InputFilter.band2_begin=0.9
InputFilter.band2_end=1.0
InputFilter.ampl1_begin=1.0
InputFilter.ampl1_end=1.0
InputFilter.ampl2_begin=0.0
InputFilter.ampl2_end=0.0
InputFilter.band1_error=1.0
InputFilter.band2_error=1.0
InputFilter.filter_type=bandpass
InputFilter.grid_density=16

;######### RESAMPLER CONFIG ############
Resampler.implementation=Pass_Through

;######### CHANNELS GLOBAL CONFIG ############
Channels_1C.count=8
Channels.in_acquisition=1

;######### ACQUISITION GLOBAL CONFIG ############
Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition
Acquisition_1C.item_type=gr_complex
Acquisition_1C.coherent_integration_time_ms=1
Acquisition_1C.pfa=0.01
Acquisition_1C.doppler_max=10000
Acquisition_1C.doppler_step=250
Acquisition_1C.blocking=true

The file is a capture at 4MSPS on a baseband of 1575.42MHz.

Thanks!