Autonomous phase sensitive radar (ApRES) on Totten Glacier 2016-2019

Files: *.dat - binary files containing raw data config.ini - config file containing all radar settings used for each site Log.txt - log file from each instrument Software for processing the raw data can be obtained from Dr. Keith Nicholls, British Antarctic Survey. Limited Matlab scripts are provided here to open the raw data.

Command: f=fmcw_load('filename.DAT') Data structure: Variable name Unit Description Nattenuators - Number of attenuation settings used (1 or 2) Attenuator_1 dB RF Attenuator value 1 Attenuator_2 dB RF Attenuator value 2 ChirpsInBurst - Number of chirps in burst TimeStamp day Time of first chirp (Matlab date format) Temperature_1 C Instrument temperature 1 Temperature_2 C Instrument temperature 2 BatteryVoltage V Battery voltage Burst - Number of burst in file FileFormat - Identifies file format from different equipment versions vif V Voltage chirpTime day Time of chirp (Matlab date format) filename - Filename SamplesPerChirp - Number of samples per chirp fs Hz Sampling frequency f0 Hz Start frequency K rad/s/s Chirp gradient (200MHz/s) f1 Hz Stop frequency B Hz Bandwidth fc Hz Centre frequency er - Material permittivity ci m/s Velocity in material lambdac m Centre wavelength t s Sampling time (relative to first sample) f Hz Frequency stamp for sample