Calculation ruler for quickly calculating free space attenuation of electromagnetic waves

A free-space, fast-calculating technology, applied in hand-operated computing devices, calculations, analog computers, etc., can solve the problem of inability to quickly calculate the attenuation value of electromagnetic waves, and achieve significant military benefits, save calculation time, and calculate and read quickly. Effect

Pending Publication Date: 2020-05-05
AIR FORCE ENG UNIV OF PLA AIRCRAFT MAINTENACE MANAGEMENT SERGEANT SCHOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this patent document is used for electromagnetic wave frequency attenuation and redshift experiments, and cannot quickly calculate the attenuation value of electromagnetic waves in free space

Method used

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  • Calculation ruler for quickly calculating free space attenuation of electromagnetic waves
  • Calculation ruler for quickly calculating free space attenuation of electromagnetic waves
  • Calculation ruler for quickly calculating free space attenuation of electromagnetic waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 As shown, a slide rule for quickly calculating the free space attenuation of electromagnetic waves includes a base 1, a distance scale fixed on the base 1, a transparent reading plate 3 fixed on the distance scale, and a movable setting The frequency scale 4 and the attenuation value scale 5 on the base 1 , the frequency scale 4 and the attenuation value scale 5 slide in linkage, and the transparent reading plate 3 is provided with a frequency pointer 6 .

[0044] Specifically, the distance scale includes a first scale 21 and a second scale 22 arranged in parallel on the base 1, and the attenuation value scale 5 is located between the first scale 21 and the Between the second scales 22, the frequency scale 4 is located on one side of the first scale 21, and the frequency scale 4 is connected to the attenuation value scale 5 through a connecting rod. There is a gap between the bottom of the scale 21 and the base, and the connecting rod traverses through...

Embodiment 2

[0046] Such as Figure 2-7 As shown, the slide rule for quickly calculating the free space attenuation of electromagnetic waves in the embodiment of the present invention is different from the first embodiment in that: the scale display range of the first scale is 10-2000m, and the first scale The reference length of the ruler is 5cm with the length of 10-100m, and the formula for determining the scale of the first scale is:

[0047]

[0048] Where: S 1 In order to display the distance, the unit is m;

[0049] d 1 It is the real distance between the scale corresponding to a certain distance value S and the "0 point" on the scale, and the unit is cm.

[0050] The scale display range of the second scale is 1~200km, the reference length of the second scale is 5cm with the length of 1~10km, and the scale determination formula of the second scale is:

[0051]

[0052] Where: S 2 To display the distance, the unit is km;

[0053] d 2 It is the real distance between the s...

Embodiment 3

[0094] Such as Figure 8 As shown, a slide rule for quickly calculating the free space attenuation of electromagnetic waves includes a base 1, a distance scale fixed on the base 1, a transparent reading plate 3 fixed on the distance scale, and a movable setting The frequency scale 4 and the attenuation value scale 5 on the base 1 , the frequency scale 4 and the attenuation value scale 5 slide in linkage, and the transparent reading plate 3 is provided with a frequency pointer 6 .

[0095] Specifically, the distance scale includes a first scale 21 and a second scale 22 arranged in parallel on the base 1, and the attenuation value scale 5 is located between the first scale 21 and the Between the second scales 22, the frequency scale 4 is located on one side of the first scale 21, and the frequency scale 4 is connected to the attenuation value scale 5 through a connecting rod. There is a gap between the bottom of the scale 21 and the base, and the connecting rod traverses throug...

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PUM

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Abstract

The invention discloses a calculation ruler for quickly calculating free space attenuation of electromagnetic waves, and belongs to the technical field of metering equipment. The calculation ruler comprises a base, a distance graduated scale fixedly arranged on the base, a transparent reading plate fixedly arranged on the distance graduated scale, and a frequency graduated scale and a attenuationvalue graduated scale which are movably arranged on the base, wherein the frequency graduated scale and the attenuation value graduated scale are in linkage sliding, and a frequency pointer is arranged on the transparent reading plate. According to the calculation ruler, the attenuation value of the signal can be quickly calculated, and the effectiveness of electronic warfare is met.

Description

technical field [0001] The invention relates to the technical field of measuring equipment, in particular to a slide rule for quickly calculating the free space attenuation of electromagnetic waves. Background technique [0002] When performing reconnaissance or jamming tasks, air combat personnel of electronic warfare aircraft need to quickly and accurately grasp the battlefield electromagnetic situation and target radiation source information. An important indicator of status is the basic data for combat personnel to adjust receiver sensitivity and dynamic range, and is indispensable and important information for formulating reconnaissance and jamming plans. According to the signal link transmission theory, the transmitted power of the signal can be calculated by the received power of the signal and the attenuation of the signal in the link. The received power of the signal can be directly measured, and the attenuation of the signal in the link transmission needs to be cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06G1/06
CPCG06G1/06
Inventor 高嵩胡华强管亮中牛强军刘鹰邹志斌杨玉林邱丽娟罗明超汪涛董晓璇
Owner AIR FORCE ENG UNIV OF PLA AIRCRAFT MAINTENACE MANAGEMENT SERGEANT SCHOOL
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