DIGITAL FREQUENCY MULTIPLIERS IN AUTONOMOUS INFORMATION AND MEASUREMENT SYSTEMS

Background. Increasing the performance of remotely controlled on-board equipment of autonomous information and measurement systems when entering flight task data into it requires the use of a clock frequency significantly higher than that required for autonomous operation of equipment selected based on the minimum current consumption. The task to eliminate this contradiction, complicated by the need to have information about the exact ratio of the used frequencies, is urgent. Materials and methods. The solution of the above problem can be realized by using digital frequency multipliers. Results. The variants of frequency multipliers construction are considered. It is shown that the known variants of multipliers construction cannot fully satisfy the necessary requirements. Multipliers using a pulse pack generator have a large unevenness of the output pulses, and multipliers using automatic frequency adjustment do not have instantaneous mode output, moreover, multipliers with automatic tuning and a frequency detector on a 512PS8VC chip can have a duration of transients exceeding several tens of seconds. A combined method of frequency multiplication is proposed. Conclusions. It is shown that the combined method of frequency multiplication based on generation of pulse packs and auto-tuning with phase detection combines positive qualities of pulse packs generation in the part of instantaneous output to the mode and small non-uniformity of output pulses of auto-tuning.