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Method of dominant combination in passive atomic frequency scale system and its device

A technology of atomic frequency standard and combination of advantages, applied in the direction of automatic power control, electrical components, etc., can solve the problems of increasing the size, weight, power consumption, and restricting applications of the whole machine, achieving light weight, reduced contribution, and low power consumption Effect

Inactive Publication Date: 2005-05-25
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In principle, the above-mentioned solutions can achieve both long-term and short-term stability, but after all, two frequency standards are combined into one frequency standard, which greatly increases the volume, weight, and power consumption of the whole machine, which limits the application of these solutions in engineering projects. application on

Method used

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  • Method of dominant combination in passive atomic frequency scale system and its device
  • Method of dominant combination in passive atomic frequency scale system and its device
  • Method of dominant combination in passive atomic frequency scale system and its device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0065] 1. Part selection

[0066] *79Hz frequency selection amplifier 10 chooses OP07.

[0067] *The first latch 13a and the second latch 13b use SN74F374

[0068] * Travel time counter 14 selects SN74F161A for use.

[0069] *MCU 15 selects AT89C52.

[0070] *Digital-to-analog converter 16 selects AD8122 for use.

[0071] *D flip-flop 19 selects SN74F74.

[0072] * Square wave shaper 11 selects MAX913.

[0073] 2. Experimental results

[0074] Depend on Image 6 It can be seen that the simulation physical model consists of band-limited white noise 21, subsystem 22, band-pass amplification gain 23, first transfer function 24a, second transfer function 24b, first gain 25a, second gain 25b, linear growth 26, crystal oscillator noise 27. Oscilloscope 28 and simulation output 29. The connection relationship of each component is: the band-limited white noise 21 is sequentially connected to the band-pass amplification gain 23, the first transfer function 24a, the first gain 2...

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Abstract

This invention discloses a advantage combination method for inactive atomic frequency standard, which contains (1), using a inactive atomic frequency standard system and pressure controlled quartz oscillator as relative independent frequency source and combining both advantages, (2),using special servo parts to prolong loop resonance time to 1-10 second. The servo system contains 79 Hz frequency selection amplifier, square wave reshaper, first latching driving circuit, second latching driving circuit, first latch, second latch, time counter, monolithic processor and digital-analog converter. Said invention can be widely used in navigational fixing, Doppler speed measurement, synthetic aperture imaging and dynamic tracking etc.

Description

technical field [0001] The invention relates to a passive atomic frequency standard, in particular to a method and device for combining advantages in a passive atomic frequency standard system; it can be widely used in navigation and positioning, Doppler speed measurement, synthetic aperture imaging, dynamic Passive hydrogen atomic frequency standards, passive rubidium atomic frequency standards, and passive cesium beam atomic frequency standards in tracking and other fields. Background technique [0002] Compared with the high stability crystal oscillator, the passive atomic frequency standard has good long-term stability, especially the passive rubidium atomic frequency standard has very important application value in engineering because of its small size, light weight and low power consumption. However, due to the limitation of physical mechanism, the short-term stability index of passive atomic frequency standards is not good enough, which limits their application in eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/26
Inventor 雷海东王艳李超余钫金鑫管妮娜陈云启左毅力朱熙文胡昌泉盛荣武
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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