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Parameter block layout

Description of the parameter block (metadata)

Eros3/ESR data format

Data is recorded in the matlab4 data format and consists of several blocks:

  • the experiment info, d_ExpInfo (ASCII string)
  • the antenna parameters (see below), d_parbl (32 bit reals)
  • the data, d_data (2x32 bit complex reals)
  • the raw samples (not always present), d_raw (216 bit complex integers)
  • Bit 65-74 is different depending on system
  • Antenna ID parameter 41:
    1 32m ESR
    2 42m ESR
    3 VHF
    4 UHF
    5 Kiruna
    6 Sodankylä
    8 32p ESR

  • ESR parameter 67
    0 SPEAR all tx off
    1 SPEAR low power radar
    2 SPEAR high power radar
    3 SPEAR heating

  • ESR parameter 68

    • 0 Lower plasma line LO1 set to 492 MHz and upper plasma line LO1 to 502 MHz
    1 Lower plasma line LO1 set to 496 MHz and upper plasma line LO1 to 502 MHz
    2 Lower plasma line LO1 set to 492 MHz and upper plasma line LO1 to 506 MHz
    3 Lower plasma line LO1 set to 496 MHz and upper plasma line LO1 to 506 MHz


  • UHF parameter 67 (not available at UHF remotes) and VHF parameter 72 gives the power status on the Tromsø¸ systems as follow:
    Bit 0 UHF RF on
    Bit 1 UHF HV on
    Bit 2 UHF power on
    Bit 3 VHF RF on
    Bit 4 VHF HV on
    Bit 5 VHF power on
    Bit 6 Heating RF on
    Bit 7 Heating power on

  • VHF parameter 69 are decoded as follows:
    bit 0:1 Antenna phasing 
    0 allB
    2 allA
    3 split

    bit 2:5 IF setup
    bit 2 lo1/chI  0 298 MHz 1 290 MHz
    bit 3 lo1/chII 0 298 MHz 1 290 MHz
    bit 4 lo2/chI  0 84 MHz 1 78 MHz
    bit 5 lo2/chII 0 84 MHz 1 78 MHz

    Positive logic Note these values are integers

    • d_parbl

    Entry

    Value

    Introduced
    1 Dump end year
    2 Dump end month
    3 Dump end days
    4 Dump end hours
    5 Dump end minutes
    6 Dump end seconds
    7 Integration time, sec
    8 Combined output power, W
    9 Elevation, degrees
    10 Azimuth, degrees
    11 Dump end time, secs since 1970
    12 Dump sequence number
    13 % power tx1 klystron a (of 62.5 kW)
    14 % power tx1 klystron b
    15 % power tx2 klystron a
    16 % power tx2 klystron b
    17 % power tx3 klystron a
    18 % power tx3 klystron b
    19 % power tx4 klystron a
    20 % power tx4 klystron b
    21 Noise injection calibration, K
    22 Pre-integration factor
    23 % power tx5 klystron a
    24 % power tx5 klystron b
    25 % power tx6 klystron a
    26 % power tx6 klystron b
    27 % power tx7 klystron a
    28 % power tx7 klystron b
    29 % power tx8 klystron a
    30 % power tx8 klystron b
    31 rx frequency, channel 1 (MHz) 1999-08-19
    32 rx frequency, channel 2 (MHz) 1999-08-19
    33 rx frequency, channel 3 (MHz) 1999-08-19
    34 rx frequency, channel 4 (MHz) 1999-08-19
    35 rx frequency, channel 5 (MHz) 1999-08-19
    36 rx frequency, channel 6 (MHz) 1999-08-19
    37 rx frequency, channel 7 (MHz) 1999-08-19
    38 rx frequency, channel 8 (MHz) 1999-08-19
    39 rx frequency, channel 9 (MHz) 1999-08-19
    40 d_parbl version number 1999-11-12
    41 antenna ID (1-8) 1999-11-12
    42 Remote antenna intersection range, m 2003-02-28
    43-62 User parameters 2003-07-23
    63 High voltage reading (V) 2003-09-01
    64 Loop counter 2004-02-01
    65
    		 ESR Peak power read from power meter (W)
    		 2004-02-20
    66
    		 ESR RF duty cycle calculated from RC binary
    		 2004-03-20
    67
    		 ESR SPEAR tx status
    		 2007-03-22
    68
    		 ESR LO settings
    		 2007-05-14
    69
    		 ESR CHI attenuator settings (dB)
    		 2007-05-14
    70
    		 ESR CHII attenuator settings (dB) 2007-05-14
    71
    		 ESR Peak power in wave guide 32m antenna (kW) 2008-05-24
    72
    		 ESR Peak power in wave guide 42m antenna (kW) 2008-05-24
    65 UHF Peak power read from wave guide (W) 2004-02-20
    66 UHF RF duty cycle read from wave guide 2004-03-20
    67
    		 UHF Power status on Tromsø¸ systems
    		 2006-11-01
    65
    		 VHF antenna elevation panel 1 (deg)
    		 2005-05-21
    66
    		 VHF antenna elevation panel 2  (deg) 2005-05-21
    67
    		 VHF antenna elevation panel 3 (deg) 2005-05-21
    68
    		 VHF antenna elevation panel 4 (deg) 2005-05-21
    69
    		 VHF IF system setup see note 1
    		2005-05-21
    70
    		 VHF Peak power read from wave guide  (W)
    		 2006-10-30
    71
    		 VHF RF duty cycle read from wave guide
    		2006-10-30
    72
    		 VHF Power status on Tromsø¸ systems 2006-11-01
    73
    		 VHF CHI atennuator settings (dB)
    		 2008-04-21
    74
    		 VHF CHII atennuator settings (dB) 2008-04-21
    75
    		 VHF Average power read in wave guide(kW) 2008-12-11