The new ASPRs Standards and number of check points

The new ASPRs Standards and number of check points mjg8 Fri, 01/03/2020 - 08:49

The new standards provide Table 8 for the recommended number of check points required for validating product accuracies. A minimum of 30 check points should be used to assess vertical or horizontal accuracy for a product. For project areas that are larger than 10,000 square kilometers, use only 120 checkpoints.

Required Number of NVA Checkpoints by Project Area
Project Area (Square Kilometers)	Total Number of Checkpoints for NVA
≤1000⁵	30
1001-2000	40
2001-3000	50
3001-4000	60
4001-5000	70
5001-6000	80
6001-7000	90
7001-8000	100
8001-9000	110
9001-10000	120
>10000	120

Download a copy of the standards here.