PDS_VERSION_ID                = PDS3
LABEL_REVISION_NOTE           = "R. Lorenz  3/17/2017"
RECORD_TYPE                   = STREAM

OBJECT                        = INSTRUMENT
 INSTRUMENT_HOST_ID           = {VEGA1, VEGA2}
 INSTRUMENT_ID                = {VG1BL, VG2BL}

 OBJECT                       = INSTRUMENT_INFORMATION
  INSTRUMENT_NAME             = {"VEGA 1 BALLOON", "VEGA 2 BALLOON"}
  INSTRUMENT_TYPE             = "METEOROLOGY"
  INSTRUMENT_DESC             = "



Science Objectives
==================

The goal of the Vega balloon experiment was to measure the winds by radio 
tracking, and to make in-situ measurements of temperature, pressure, 
vertical wind and cloud density variations. 

Instrument Overview
===================

The balloon gondola containing the radio system, battery and instruments was 
6.9kg, suspended 13m beneath a 3.54m (nominal) diameter superpressure teflon 
balloon. The most detailed description of the instrumentation is KREMNEV1986; 
some useful details are in CRISP1990, and the nephelometer specifically is 
described by RAGENT1986.  The initial results and overall mission are 
described in SAGDEEV1986H.

An important limitation is that data were sent (or tracking performed with a 
data-free carrier signal for VLBI tracking) only every 30 minutes, decreasing
to once an hour later in the mission, in order to maximize the 
battery-limited lifetime. Each transmission conveyed only 852 bits of data - 
details of the scheme are given in KREMNEV1986. 
"

 END_OBJECT                   = INSTRUMENT_INFORMATION

 
 OBJECT                       = INSTRUMENT_REFERENCE_INFO
  REFERENCE_KEY_ID            = "KREMNEV1986"
 END_OBJECT                   = INSTRUMENT_REFERENCE_INFO

 OBJECT                       = INSTRUMENT_REFERENCE_INFO
  REFERENCE_KEY_ID            = "SAGDEEV1986H"
 END_OBJECT                   = INSTRUMENT_REFERENCE_INFO

 OBJECT                       = INSTRUMENT_REFERENCE_INFO
  REFERENCE_KEY_ID            = "RAGENT1987"
 END_OBJECT                   = INSTRUMENT_REFERENCE_INFO

 OBJECT                       = INSTRUMENT_REFERENCE_INFO
  REFERENCE_KEY_ID            = "PRESTON1987"
 END_OBJECT                   = INSTRUMENT_REFERENCE_INFO

 OBJECT                       = INSTRUMENT_REFERENCE_INFO
  REFERENCE_KEY_ID            = "SAGDEEV1992"
 END_OBJECT                   = INSTRUMENT_REFERENCE_INFO

 OBJECT                       = INSTRUMENT_REFERENCE_INFO
  REFERENCE_KEY_ID            = "CRISP1990"
 END_OBJECT                   = INSTRUMENT_REFERENCE_INFO


END_OBJECT                    = INSTRUMENT
END