ACOUSTIC WIND PROFILING

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ACOUSTIC WIND PROFILING (SODARS) and AIR
TEMPERATURE PROFILING (RASS)
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What is a Sodar ?

• It is an acoustic device working in the air.
• It is used for remote sensing of the atmosphere.
• It gives information such as wind speed,
  direction, at various altitudes.

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Our Doppler Sodars continuously and reliably
measures at heights ranging from 10 M up to 5000
M

• wind speed and direction
• vertical motions
• turbulence
• thermal structure
• mixing depth

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A full range of Sodars
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Our phased array SODARS
The 3 km range PA5
The tried and proven PA1
The new highly portable PA0
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PA0 SODAR Antenna

• 9 frequencies (up to 15 optional with PA1 and
  PA5).
• Antenna size (meters) 0.4 x 0.4
• Antenna weight including supporting structure 12
  Kg.
• Maximum range 1000 m.

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PA1 SODAR Antenna

• 9 frequencies (up to 15 optional with PA1 and
  PA5).
• Antenna size (meters) 0.65 x 0.65
• Antenna weight including supporting structure 25
  Kg.
• Maximun range 2000m.

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PA5 SODAR Antenna

• 9 frequencies (up to 15 optional with PA1 and
  PA5)
• Antenna size (meters) 1.4 x 1.4
• Antenna weight including supporting structure
  120 Kg
• Maximun range 5000 m

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SODAR HARDWARE

• All Remtech SODARs have a PC based electronic
  cabinet to run the system and process the data,
  and a printer.

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UNIQUE FEATURES OF THE REMTECH DOPPLER SODAR

• Frequency coded transmission.
• Software controlled antenna temperature
  compensation.

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UNIQUE FEATURES OF THE REMTECH DOPPLER SODAR

• System can be set up in less than one hour.
• Fixed echo detection routine.

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UNIQUE FEATURES OF THE REMTECH DOPPLER SODAR

• Use highly efficient Fast Fourier Transform (FFT)
  signal processing by software.
• Ongoing development for over 25 years.

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UNIQUE FEATURES OF THE REMTECH DOPPLER SODAR

• Output can be provided to Local Area Network
  (LAN) for data distribution.
• Three year warranty on parts and labor.

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SODAR VS TOWER DATA COMPARISON

• Represents fully unedited intercomparison data
  between an 80 meters meteorological tower and one
  PA0.

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SODAR VS TOWER DATA COMPARISON

• Represents fully unedited intercomparison data
  between an 80 meters meteorological tower and one
  PA0.

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Radio Acoustic Sounding System(RASS)
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What is a RASS ?

• It remotely measures temperature profiles in the
  atmosphere with resolution to 0.2 Celsius.
• It can be used in environmental studies for
  temperature gradients, and for monitoring how the
  propagation of radio waves is modified by
  atmospheric conditions.
• It can provides measurements up to 1,500 meters
  above grounds.

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Radio Acoustic Sounding System (RASS)
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Radio Acoustic Sounding System(RASS)

• The RASS measures the vertical temperature
  profile in the same layer as sampled by the
  SODAR.
• The measurements are made from the ground, using
  a RADAR to measure the speed of the vertical
  acoustic pulses which travel at a speed which
  varies with the temperature of the atmosphere.

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Radio Acoustic Sounding System(RASS)

• The RASS measures the Doppler shift of the RADAR
  pulse, which is then used to calculate the speed
  of the acoustic pulse.
• The temperature profile is calculated from the
  speed profile using standard equations for the
  speed of sound in air.

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Radio Acoustic Sounding System (RASS)
RASS Antennas
PA5 Antenna
Solar Power Array
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REMTECH IN THE WORLD

• With more that 400 systems delivered worldwide,
  Remtech is by far the number 1 in the Sodar
  industry.

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Remtech (USA) 2 Red Oak Road ST JAMES, NY
11780 USA Tel [phone] Fax (303) 772
6827

• Remtech (France)
• 2/4 Avenue de lEurope
• 78140 VELIZY VILLACOUBLAY
• FRANCE
• Tel [phone]
• Fax [phone]