I4500 integrated navigation system has built-in high-performance MEMS gyroscope and accelerometer, which can receive external GNSS data, realize multi-sensor fusion and integrated navigation algorithm, and have short-term inertial navigation capability when GNSS is invalid. The product has high reliability and strong environmental adaptability. By matching different software, the products can be widely used in the fields of tactical and industrial unmanned aerial vehicles, unmanned vehicles, unmanned ships, aviation guided bombs, intelligent ammunition, rockets, mobile communication, mapping, seeker and stable platform. The product is divided into low-configuration version (I4500-A) and high-configuration version (I4500-B). The two products have different precision and price, which is convenient for users to choose based on specific use conditions.