regarding testing of antenna radiation pattern using ancheoicc chember

Can anyone please tell me where i ccan test my anteena forradiation pattern using ancheoic chamber ? in which institute ? what is the cost ? n what is the procedure? plesse do replyy

Depends where you are.
No good recommending somewhere on the other side of the globe.

Most antenna testing can be done at an open air site, especially at lower frequencies where antennas can sometimes be large.

Procedure is usually to rotate the antenna on a round rotating platform and use fixed receiver.

How much usually depends on how long it all takes, and what actual tests you require carried out.