Metric:

Companies like Viavi and Spirent offer GPS receiver internal bus analyzers that emulate the ICD-GPS-059 interface. These tools can inject faults and monitor responses—something impossible to do with only the PDF.

Revision B (dated 1990) and subsequent Interface Revision Notices (IRNs 001, 003, and 004) were vital during the NAVSTAR GPS Phase III rollout. icd-gps-059 pdf

Check the USCG Navigation Center for legacy interface documents. Companies like Viavi and Spirent offer GPS receiver

Here’s what you should know:

Create a spreadsheet comparing the ICD’s mandatory requirements (“shall”) against your design’s capabilities. Common pitfalls include: icd-gps-059 pdf