482MHz and 1290MHz RASS-Extension
Profiling of the virtual temperature

Hard- and Software of DSDPA.90-24 and DSDPA.90-64 are prepared to integrate a 1290 or 482 MHz RADAR to build up a MERASS 1000/3000 system for simultaneous measurement of wind, turbulence and temperature.

1. Extention: RASS Subsystem 1290 MHz (Extension of DSDPA.90-24 or -64)

Such RASS system requires an official frequency allocation permit by the national authorities which must be organized by the customer as the operator of such device. The used frequency 1290 MHz is a frequency band which is declared as a Class A preference for such meteorological applications. However, special care must be taken by the customer before ordering such RASS in view of frequency allocation. METEK confirms any support for such actions.

a.) Design of Electromagnetic Antennas

b.) Transmitter/Receiver Characteristics

2. Extension: RASS Subsystem 482 MHz (Extension of DSDPA.90-24 or -64)

In case that the customer wants to measure also the temperature profile as high as possible a RASS system based on 482 MHz technique could be considered. Such system has been developed recently by METEK on a contract of the Institute of Tropospheric Research Leipzig, Germany, and was successfully demonstrated on a measuring campaign of the national weather service of Germany in September 2000. This system should be combined with the bigger phase array antenna type DSDPA.90-64 in order to have comparable measuring heights for both profilers, it is not recommended in combination with DSDPA.90-24 due to the low required frequency.

a.) Design of Electromagnetic Antennas

b.) Transmitter/Receiver Characteristics