What Radar Sensor I will need?

[Breixo]

Hi to all,

I am a newbie in radar and I am looking for a Radar Sensor (prefereable with DSP Card and Can-bus interface inside) that it can do the following:

1.- Detect human presence (moving and stationary)
2.- Calculate position (distance and angle)
3.- Maximum Range of 30 m, more or less
4.- Wide azimut angle or variable azimut angle though different antennas.
5.- 10.15 and/or 24 GHz and/or 76-77 GHz
6.- Low-cost ;-)

Please, I will appreciate a brief description of the name of the technology to look for docs and books. If you know manufacturers it will be the best for me.

Thank you very much,

 

[mr_ghz]

Hi Breixo

What you need is a CW doppler radar which is capable of doing FMCW. If you also want to detect the angle of the object you also need several antennas (phase shifted). A module which cover all of them is not known to me (especially with DSP-card or CAN-bus included).
Most modules I know have analog doppler outputs (one or two, used for direction sensing) and a FM input. With this input you can modify the transmit frequency, which will make it possible to detect stationary objects.
I would prefer using 24GHz modules, because they are allowed to use nearly everywhere (ISM-band, 10.15GHz is only allowed in some countries). 76GHz modules are (at the moment) very expensive and are only allowed for automotive usage.
Such modules can be bought at:

MDT (Cavity-Modules with integrated varactor and schottky-diode)
InnoSenT (German company, veeeeery unfriendly)

There are also other companies in Asia.

Regards
mr_ghz

 

[tmbinc]

I know this is old, but I have had a very good experience with innosent. The cheapest ones (mono, without IF amplifier) are available for 6 Euro (at 1 piece), whereas for example a stereo one, with IF amplifier, is about 30 Euro. They also have more advanced ones, but i was interested in the low-end area only.