The core performance of GNSS receivers depends on timing accuracy and positioning precision, where nanosecond-level clock deviations can cause meter-level or even decimeter-level positioning errors.
In challenging outdoor environments with extreme temperature fluctuations, strong electromagnetic interference, and satellite signal blockage, traditional temperature-compensated crystal oscillators (TCXO) struggle to maintain long-term stability. In contrast, constant temperature crystal oscillators (OCXO) have become the core timing reference for GNSS receivers, enabling high-precision time synchronization and accurate positioning, thanks to their exceptional frequency stability and interference resistance. 
Three Core Application Scenarios: OCXO Enables Full-Spectrum Upgrade of GNSS Receivers
1. High-precision positioning scenarios
In scenarios requiring centimeter-level or higher precision positioning, the high-frequency stability and low phase noise of constant temperature crystal oscillators can significantly improve the accuracy of GNSS receivers in signal tracking and positioning calculations, reducing errors caused by clock drift.
Autonomous vehicles require GNSS positioning accuracy at the centimeter level, which depends on precise timing for path planning and safety avoidance. Yangxing Technology's constant temperature crystal oscillator boasts ultra-high stability, with ±0.1ppb precision that perfectly meets the demands of automotive GNSS receivers, providing real-time and stable time synchronization for autonomous driving. 
2. High-Precision Time-Synchronization Applications
In time synchronization applications requiring extreme precision, the constant temperature crystal oscillator (OCXO) serves not only as a continuous source of high-purity clock signals but also provides reliable short-term timekeeping capability when satellite signals are interfered with or interrupted.
In power grid dispatching, financial transactions, and communication networks, NTP/PTP time synchronization servers rely on GNSS receivers to achieve global time synchronization, demanding ultra-high stability of clock sources. The constant temperature crystal oscillator, serving as the core timing reference, can replicate the UTC time standard, ensuring nanosecond-level synchronization accuracy for cross-regional devices. This technology supports critical scenarios such as power dispatch coordination and high-frequency trading time management.
3. Harsh Environmental Application Scenarios
When GNSS receivers operate in complex outdoor environments with intense temperature variations, such as field exploration and military applications, OCXO (Optical Crystal Oscillator) can effectively suppress temperature-induced frequency deviations through constant temperature control technology. This ensures stable performance under varying environmental conditions, thereby reducing signal demodulation bit error rates and positioning inaccuracies.
GNSS receivers deployed in scenarios such as land surveying, mineral exploration, and maritime navigation require millimeter-level positioning accuracy and long-term timing stability. Temperature-stable crystal oscillators (OCXO) can withstand extreme temperature variations and strong electromagnetic interference in field environments, ensuring the precision and consistency of survey data while providing reliable timing support for geographic information acquisition.
YXC's Exclusive Solution: Full Range of Temperature-Stable Crystal Oscillators (OCXO) for GNSS Receiver Applications
To address the customized requirements of GNSS receivers in diverse scenarios, Yangxing Technology has developed a comprehensive OCXO product portfolio that optimally balances precision, compactness, and power efficiency. The key product lines and core specifications are as follows:
· High Precision & High Reliability: Achieving frequency stability at the 10^-9 level with low aging rate, directly enabling GNSS receiver positioning accuracy to advance from meter-level to centimeter-and millimeter-level precision.
· Anti-vibration and Anti-shock: Ensuring GNSS Receiver Maintains Stable Frequency Output in Harsh Environments
· Low phase noise: 1KHz phase noise ≤-165dBc/Hz, ideal for applications requiring ultra-high signal purity
· Multiple package sizes are available, including the 0907/1409 ultra-compact package.
Yangxing Technology provides end-to-end support from sample testing and compatibility debugging to mass production, empowering GNSS receiver manufacturers to enhance product accuracy and drive the localization of core components.
