A Xona engineer tests hardware at the startup's R&D lab in San Mateo, California.

Startup Xona Space Systems has raised around $15 million for its proposed navigation constellation, including funds from GPS satellite maker Lockheed Martin’s venture capital arm.

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Jason Rainbow writes about satellite telecom, space finance and commercial markets for SpaceNews. He has spent more than a decade covering the global space industry as a business journalist. Previously, he was Group Editor-in-Chief for Finance Information...