Apple confirmed that it has purchased San Francisco-based GPS startup Coherent Navigation. While Apple declined to provide specific reasons for the purchase, it could be part of the company’s efforts to improve Apple Maps. Coherent Navigation built its reputation developing commercial navigation services with Boeing and satellite network operator Iridium, among others. The company’s high-precision navigation systems are accurate to within three to five meters. Coherent has also worked on autonomous navigation and robotics projects, notes The New York Times. Apple has acquired other location tech services in recent years, including Placebase, Locationary and Hopstop.