![Q: What is the significance of the NANUs provided by GPS and the similar alerts provided by other GNSS constellations? Are they needed for the use of these systems, and if not, Q: What is the significance of the NANUs provided by GPS and the similar alerts provided by other GNSS constellations? Are they needed for the use of these systems, and if not,](https://insidegnss-com.exactdn.com/wp-content/uploads/2020/05/shutterstock_1088000534.jpg?strip=all&lossy=1&ssl=1)
Q: What is the significance of the NANUs provided by GPS and the similar alerts provided by other GNSS constellations? Are they needed for the use of these systems, and if not,
![GPS III SVN-74, First of Its Kind, Goes Active - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design GPS III SVN-74, First of Its Kind, Goes Active - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design](https://insidegnss-com.exactdn.com/wp-content/uploads/2020/01/513870.jpg)
GPS III SVN-74, First of Its Kind, Goes Active - Inside GNSS - Global Navigation Satellite Systems Engineering, Policy, and Design
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