So practically "Pulse" emision should be defined by its bandwidth.
Could one (leagally) make a spread spectrum amateur radar?

Sherpa Doug

> -----Original Message-----
> From: Graeme Zimmer [mailto:gzimmer@OPTUSHOME.COM.AU]
> Sent: Friday, September 07, 2001 4:21 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Definition of "pulse" - amateur radar again
>
>
> Doug,
>
> > How about a "digital" signal consisting of a FM square wave?  You
> > transmit a carrier for a time coresponding to your max
> range.  The you
> > suddenly shift the transmit frequency by your IF frequency
> for the other
> > half of the 50% duty cycle square wave.  Echos from the
> first half would
> > be recieved by your IF during the second half and vice versa.  This
> > simple constant power binary FM signal would be hard to forbid as a
> > "pulse" emission,
>
> But if you slew the frequency fast enough to be useful, you
> will be creating
> virtually the same sidebands as if you simply switched it on and off.
>
> ........................... Zim
>
> --
> http://www.piclist.com#nomail Going offline? Don't AutoReply us!
> email listserv@mitvma.mit.edu with SET PICList DIGEST in the body
>
>
>

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body