Reply by CCastillo May 8, 20072007-05-08
On May 8, 2:51 am, John_W_Her...@yahoo.com (John Herman) wrote:
> Wouldn't you expect to use an analog matched filter followed by a filter prior > to conversion to digital waveform? A/D conversion is getting faster but I > think the top limit is around 5 GHz. > > In article <1178519133.968236.34...@n59g2000hsh.googlegroups.com>, > > gyansor...@gmail.com wrote: > >On May 6, 10:55 pm, "sugarfish" <tangyu0...@yahoo.com.cn> wrote: > >> Hi!all > >> I am perform on UWB through wall radar research. The most advanced > >> through wall radar system is the "Xaver 800" produced by Israel > >> Camero-Tech Ltd. The "Xaver 800" used the ultra short pluse with bandwidth > >> about 7GHz. How to sample and digitalize such wideband signals? If i must > >> get a AD converter faster than 7G? Thanks > > >> _____________________________________ > >> Do you know a company who employs DSP engineers? > >> Is it already listed athttp://dsprelated.com/employers.php? > > >Does it go through clothes too??!!!
I know other radar apart from the Xaver that also obtains good results, but they are not commercial but for research. These kind of signals with so high bandwidth are usually demodulated before digitalization. You can search more information in the web, searching for Continous-wave radar (CW-radar). After this demodulation, bandwidth only depends on desired range coverage.
Reply by John Herman May 7, 20072007-05-07
Wouldn't you expect to use an analog matched filter followed by a filter prior 
to conversion to digital waveform?  A/D conversion is getting faster but I 
think the top limit is around 5 GHz.

In article <1178519133.968236.34200@n59g2000hsh.googlegroups.com>, 
gyansorova@gmail.com wrote:
>On May 6, 10:55 pm, "sugarfish" <tangyu0...@yahoo.com.cn> wrote: >> Hi!all >> I am perform on UWB through wall radar research. The most advanced >> through wall radar system is the "Xaver 800" produced by Israel >> Camero-Tech Ltd. The "Xaver 800" used the ultra short pluse with bandwidth >> about 7GHz. How to sample and digitalize such wideband signals? If i must >> get a AD converter faster than 7G? Thanks >> >> _____________________________________ >> Do you know a company who employs DSP engineers? >> Is it already listed athttp://dsprelated.com/employers.php? > >Does it go through clothes too??!!! >
Reply by Wim Ton May 7, 20072007-05-07
<gyansorova@gmail.com> wrote in message
news:1178519133.968236.34200@n59g2000hsh.googlegroups.com...
> On May 6, 10:55 pm, "sugarfish" <tangyu0...@yahoo.com.cn> wrote: > > Hi!all > > I am perform on UWB through wall radar research. The most advanced > > through wall radar system is the "Xaver 800" produced by Israel > > Camero-Tech Ltd. The "Xaver 800" used the ultra short pluse with
bandwidth
> > about 7GHz. How to sample and digitalize such wideband signals? If i
must
> > get a AD converter faster than 7G? Thanks > > > > _____________________________________ > > Do you know a company who employs DSP engineers? > > Is it already listed athttp://dsprelated.com/employers.php? > > Does it go through clothes too??!!! >
That is THz Radar Wim
Reply by May 7, 20072007-05-07
On May 6, 10:55 pm, "sugarfish" <tangyu0...@yahoo.com.cn> wrote:
> Hi!all > I am perform on UWB through wall radar research. The most advanced > through wall radar system is the "Xaver 800" produced by Israel > Camero-Tech Ltd. The "Xaver 800" used the ultra short pluse with bandwidth > about 7GHz. How to sample and digitalize such wideband signals? If i must > get a AD converter faster than 7G? Thanks > > _____________________________________ > Do you know a company who employs DSP engineers? > Is it already listed athttp://dsprelated.com/employers.php?
Does it go through clothes too??!!!
Reply by sugarfish May 6, 20072007-05-06
Hi!all
   I am perform on UWB through wall radar research. The most advanced
through wall radar system is the "Xaver 800" produced by Israel
Camero-Tech Ltd. The "Xaver 800" used the ultra short pluse with bandwidth
about 7GHz. How to sample and digitalize such wideband signals? If i must
get a AD converter  faster than 7G? Thanks



_____________________________________
Do you know a company who employs DSP engineers?  
Is it already listed at http://dsprelated.com/employers.php ?