Offshore wind farms can reduce the coverage of shore-based radar systems and create areas where targets become harder to detect, according to a new study.The researchers found that at a range of 5km (3 miles), effective radar coverage fell by 6.9 per cent while blind spots increased by 14.9 per cent.The research, published online last month in the peer-reviewed Chinese journal Radio Engineering, was conducted by Professor Liu Zunnian and his team from Qingdao Technological University and the...