Optical Distribution Network (ODN)
Optical distribution network (ODN) is a system that distributes four RF signal namely Transmit signal, LO1, LO2 and Clock as well
as Sync pulse (RS422) signal generated from the radar transmitter over optical fiber within the array in compliance with the
specifications of Arudhra Proto system.
ODN converts four RF signal and Sync pulse to optical domain. Once all signals are converted into optical domain it combines 5
different optical signals on a single fiber using CWDM. This CWDM signal is amplified using optical amplifier then it is splits 1:64.
At the receiver end this signal is de-multiplexed and reconstructed back to RF.
- Convert four RF signals and RS422 signal into optical form.
- It uses CWDM technology to combine five different optical signals on a single fiber
- Signal conditioning on all RF inputs to match RF to Optical converter specs
- As this combines all five different fiber to a single fiber optics it is easier to transport longer distance and high power generating unit can be placed at base station
- Signals are amplified and distributed in optical domain hence no leakage of signals hence no EMI/EMC problem
- Radar signal are reconstructed at the AGR, so no heavy cable routing inside the radar cabin
- Complete unit works on a single 28V power supply
- Occupies less space and easy to install