A Space GPS Navigation Instrument is an advanced positioning system designed to deliver ultra-precise satellite-based navigation for aerospace, research, and high-altitude missions. It receives multi-constellation signals to provide stable coordinates even in rapidly changing orbital or near-space environments. The instrument uses high-sensitivity receivers to track weak signals beyond standard atmospheric levels. Robust processing ensures accurate time, velocity, and geolocation data critical for spacecraft guidance and experimental platforms. Built with radiation-resistant and thermal-stable components, it withstands harsh space conditions. Its compact design enables integration into probes, high-altitude balloons, UAVs, or scientific payloads. Low power consumption supports long-duration missions. Ideal for aerospace navigation, orbital experiments, and precision scientific tracking.