To understand how a radar calibrated with an optical delay line, we will first understand what it is.

The basic definition of a delay line is:

“. A delay line is a device where the input signal reaches the output of the unit said, after a period of time has passed”

A Delay Line provides convenient RF RF input / outputs, with the RF transmitter and RF receiver. Internally, connect the RF transmit signal is converted into an optical signal and a fiber link to the receiver and provides the signals pre-defined time delay. The delay is the length of the fiber in the box. RFOptic determined, the leader of the RF delay lines has a wide range of selectable delay line, from 100 KHz to 20 GHz. Range of performance requirements, frequency, duration of the delay and the link can be adapted to a wide range of power levels to meet needs. These options include RF & Microwave Amplification in the transmitter and receiver and the optical gain for longer periods. RF analog delay lines provide superior performance for radar signal processing provide testing and phased-array antenna.

One of the most popular applications for optical delay lines is the radar calibration. The main reason for this, because radar signals are complex and it is difficult to reconstruct them with a digital system. By using a high-quality analog, it is easy to test and calibrate the radar in a laboratory environment, without the target areas.

It is not usually a good idea, radar pulses to the transmission frequency microwave delay, the time required is at least ten meters of cable length. This should be in the cable or microwave waveguide, which is rather bulky and lossy, and would also be necessary in order to measure the group delay distortion. The method provides a more compact optical delay of the exact time delay for radar systems.

RFoptic is a global leader in specialized facilities, such as. They have a range of optical delay lines that provide analog RF specify time frames for a variety of frequency ranges and time.

For more information on delays, in particular the optical delay lines, please visit www.DelayLine.info.


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