PRAGUE, Oct. 22 (Xinhua) -- U.S. experts will again conduct research of the locality near Misov, Brdy military area of the Czech republic, where the United States plans to station a missile defense radar base, Drahomira Nova from the Czech Defense Ministry press section said on Monday.

　　The five-member group of American environmental experts headed by Ellis Giulliland from the U.S. Missile Defense Agency started its working visit to the Czech Republic on Monday, Nova said.

　　Accompanied by Czech Defense Ministry employees, the U.S. team will study the Czech environment protection regulations.

　　They will examine a possible site for the radar installation from the point of view of water sources, the quality of the air and valuable natural localities, according to Nova.

　　Previously, the U.S. experts have completed a preliminary survey of the geological conditions, the state of the infrastructure and the transport accessibility in the Brdy military area, southwest of Prague, the capital of the Czech republic.

　　At the beginning of this month, employees of a special firm from Brno, east of the Czech republic, started making an analysis of the geological substratum and a detailed analysis of the composition of soil in the area.

　　The factors considered by experts also include whether the radar could limit the transmissions of nearby facilities, such as television and radio.

　　The United States wants to deploy ground-based interceptor missiles in Poland and a radar station in the Czech Republic as part of its missile defense shield. But Russia strongly opposes the plan, saying it poses a threat to its security.

　　The Czech Republic and Poland are in talks with the United States on the missile defense plans. Washington expects to hear the final decision from Prague next year.

　　A recent opinion poll showed more than two-thirds of Czech citizens oppose the establishment of the base.