Global Locate, a San Jose start-up that produces chips to provide wireless GPS services, has raised $8 million in a fifth round of funding, according to a regulatory filing cited by PE Week.

Global Locate specializes in Assisted GPS, or A-GPS, which is a technology that boosts a carrier’s ability to determine location using GPS. It is useful in urban areas, when the user is located in “urban canyons”, under heavy tree cover, or even indoors.

Shareholders include Siemens Venture Capital, GC Investments, Firsthand Capital Management and Third Point Offshore Fund.