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Near-space mmWave channel measurement method based on minimum phase system

A minimum phase, adjacent space technology, applied in transmission systems, transmission monitoring, electrical components, etc.

Active Publication Date: 2020-06-30
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] What the present invention aims to solve is to address the above problems, in order to overcome the limitations of traditional frequency domain measurement methods, provide a channel test method that applies minimum phase system conditions to adjacent spaces, and solve the problem that traditional frequency domain measurement methods are limited by cable length, Problems with limiting factors such as test environment

Method used

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  • Near-space mmWave channel measurement method based on minimum phase system
  • Near-space mmWave channel measurement method based on minimum phase system
  • Near-space mmWave channel measurement method based on minimum phase system

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Embodiment Construction

[0054] Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail, concrete steps are as follows:

[0055] S1. Obtain the temperature T, dry air pressure P, and water vapor pressure E at the target space; accurate measurement data can be obtained through local measurement with radiosondes and other equipment, or according to the recommendations of ITU-R P.835-5 Book, refer to the expression and data of the standard atmosphere to obtain the above parameters, the method is:

[0056] a) Temperature T

[0057] The temperature T at height h is expressed by the following formula:

[0058] T(h)=T i +L i (h-H i )K (8)

[0059] in:

[0060] T i =T(H i ) (9)

[0061] while L i is the height H i is the temperature gradient at the starting point and is given in Table 1.

[0062] Table 1L i with H i Gradient relationship

[0063] Subscript i Height H i (km)

temperature gradient L i (K / km)

0 0 -6.5 ...

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Abstract

The present invention belongs to the technical field of wireless communications and relates to a near-space millimeter wave channel measurement based on a minimum phase system. The invention provides a channel testing method applying the minimum phase system condition to a near space, and solves the problem that a traditional frequency domain measurement method is limited by the cable length, the testing environment and other factors. The core idea of the present invention is to apply the minimum phase system condition to the near space and especially to the channel measurement around the 60 GHz band.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and relates to a method for measuring an adjacent space millimeter wave channel based on a minimum phase system. Background technique [0002] Near space refers to the airspace between the highest flying altitude of ordinary aviation aircraft and the lowest orbital altitude of space-based satellites. The lowest orbit of space-based satellites is about 200km, and the maximum flight altitude of aviation aircraft is about 20km. However, in terms of application, since the main activity area of ​​near-space vehicles is below 100km, the near-space is generally defined as about The airspace of 20-120km is defined by the US military as the airspace of 20-100km. In the past, areas such as "near space", "suborbital", "space-space transition zone", "subspace", "super high altitude" or "high altitude" all refer to near space. [0003] In the traditional sense, the near space is located in th...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/309H04B17/391
CPCH04B17/309H04B17/3911
Inventor 岳光荣刘宁程龙曾丽群袁雨晨周洪
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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