4. -  Specifications

.    Receiver gain                                                   100 dB

.    Number of range gates *                                 100 (Up to 300)
     (selectable)

.    Thickness of each gate*                                  10 to 200 meters,
                                                                            in 1 meter layer increments

.    Averaging period*                                           2 mn (1mn optional) to 1 hour

.    Receiver filter type                                           Sixth order Cauer

.    Initial processing                                              1024 frequency point FFT’s by
                                                                            software

.    Background noise correction                           Signal/noise ratio continuously
                                                                            measured and used for validation
                                                                            of data vs. background noise.

.    Horizontal wind speed range                            0 to 30 m/sec 

                                                                            (0 to 50 m/s for PA0, PA1 and PA5)

.    Horizontal speed accuracy                               Better than 0.2 m/sec or 3 %
                                                                            for wind speed over 6 m/sec

.    Vertical speed range                                        - 4 to + 4 m/sec (± 12 m/s optional)

.    Vertical speed accuracy                                   5 cm/sec or better

.    Horizontal direction                                         3° or better for winds faster
     accuracy                                                         than 2 m/s.

* Parameters easily changed by key-in command.

Accuracies correspond to the limits of our validation criteria, therefore accuracies are usually better.

Operating conditions

Antenna:

    .    Temperature                                               -40° C to + 60° C
    .    Humidity                                                     10 - 100%

Electronic case:

    .    Temperature                                               5° C to 35° C

     For wider range, please consult REMTECH.

    .   Humidity                                                     20 to 80% non-condensing

 

Power consumption

	Without antenna heating	With antenna  heating
PA0 PA1 PA2 PA5  RASS     SONAR	25 W 25 W 50 W 190 W 200 W 500 W	140 W 250 W 1100 W 1150 W N/A N/A

 

 

APPLICATIONS

The REMTECH Sodar can be used in a variety of meteorological monitoring applications. Several of these are listed below.

.    Regional wind studies for pollutant dispersion analysis

.    Diffusion in complex terrain

.    Power plant siting studies

.    Environmental impact analyses

.    Building downwash studies

.    Mountain valley flows and their impacts

.    Land and sea breezes

.    Urban heat island circulations

.    Topographically induced flows

.    Nocturnal inversion formation and decay

.    Planetary boundary layer research

.    Transport of elevated pollutant plumes

.    Wind shear research, both speed and direction

.    Clear air turbulence studies

.    Thunderstorm outflows

.    Vertical temperature structure

.    Dose calculation forecasts of nuclear accidents

.    Toxic chemical spill response training

.    Wind energy site assessment

 

conclusion

The REMTECH Doppler Sodar System is clearly the most advanced system available in the world today. It has been designed with the flexibility to meet the growing research and operational requirements of the meteorological community.

NOTE :
The information in this document is subject to change without notice and should not be construed as a commitment by REMTECH.

REMTECH assumes no responsibility for any errors that may appear in this document.