The Effect of Temperature Variation on the Performance Parameters of Miniature Atomic Clocks with Similar Frequency Stability Specification

The primary source of error that causes an increase in inaccuracy in determining the location of individual users in a communication network is the lack of synchronization of their time bases. Time synchronisation of the aeronautical communication network should be ensured to the greatest extent possible. Increasing the level of synchronisation would be possible by using a selected type of atomic clocks, which would be placed in the on-board equipment of UAV assets. The paper describes the possibilities of implementing available types of atomic clocks in the instrumentation of different categories of UAV assets. This paper compares the performance of miniature CSAC cesium atomic clocks with a high-performance OCXO quartz oscillator with similar frequency stability specifications and the effect of temperature on their performance parameters. The next section analyses how time, temperature, and initial frequency errors can affect the resulting frequency stability error of each oscillator.