Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Is RCS of a target dependent on Pulse Width used in a Radar System?

Status
Not open for further replies.
K

krishnaprasadsristy

Junior Member level 1
Junior Member level 1
Joined
May 7, 2012
Messages
17
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Visit site
Activity points
1,412
The RCS measurements are generally done with a bistatic arrangement with CW illuminations. But in Radar, the pulse widths can be as low as 1us. Does the RCS of a shape depend on the time of illumination of target, if it is a low illumination time case?

Case preview: We are working on a X-Band Radar with pulse width of 1us and are calibrating it with a corner reflector of measured RCS 22 dBsm. However, the received echo from Corner Reflector is lower by nearly 15 dB than what is expected. Is RCS dependent on Pulse Width?
 

Its a bandwidth thing, with CW you have a DC level, with a pulse, you have not, so if its a proper RMS detector then the output is down by the mark/space ratio. If its peak measuring (RMS calibrated) then it should be OK, providing the circuits have a wide enough bandwidth to handle the narrow pulse width.
Frank
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top