Sadly Apple sell a model of iPad that has no GPS built in. It seems that in order to get GPS you have to buy a deluxe model that also has mobile phone capability built in (ie a SIM socket and associated circuitry). My wife found this out the hard way when we found out that her new iPad (*) didn't give a location in mapping software such as ViewRanger, Outdoor Active etc. She'd bought the version without mobile phone capability because she has an Android phone for mobile phone and internet, and only needs the iPad as a large-screen tablet for connection to the home network or for offline navigation in the car.
Why did Apple decide that to get GPS you needed to pay for mobile phone capability?
(*) Seems to be a new policy, because her older iPad has GPS but no mobile capability.