Sign In |Help & Support
ALL SECTORS
  • ALL SECTORS
  • GB(National Standard)
  • CB(Shipping)
  • CECS(Engineering Construction)
  • CJ(Urban Construction)
  • CY(News and Publication)
  • DB(Provincial Standard)
  • DL(Electricity & Power)
  • DZ(Geology & Mineralogy)
  • FZ(Spinning & Textile)
  • GA(Public Security)
  • HB(Aviation)
  • HG(Chemical Industry)
  • HJ(Environmental Protection)
  • JB(Machinery)
  • JC(Building Materials)
  • JG(Building & Construction)
  • JJ(Metering)
  • JT(Highway & Transportation)
  • LY(Forestry)
  • MT(Coal)
  • NB(Energy)
  • NY(Agriculture)
  • QB(Light Industry)
  • QC(Automobile & Vehicle)
  • QJ(Aerospace)
  • SH(Petrochemical)
  • SJ(Electronics)
  • SL(Water Resources)
  • SN(Commodity Inspection)
  • SY(Oil & Gas)
  • TB(Railway & Train)
  • YB(Ferrous Metallurgy)
  • YC(Tobacco)
  • YD(Telecommunication)
  • YY(Medical Device)
Database: 365,228(8 Aug 2026)
ground-wave transmission channels scopethis standard computational methods longwave ground wave signals electric field strength methods deleted titanium alloys appendix b quality assurance departments degree wedge ramp
SJ 20839-2002 in English

SJ 20839-2002 in English

VALID

Computational methods of LW ground-wave transmission channels

  • Issued on:2002-10-30
  • Implemented on:2003-03-01
  • File Format:PDF
  • Delivery:Via email within 1~3 business days
Price(USD): $220.00
$214.00
Standard No: SJ 20839-2002
Document status: VALID
Title in English: Computational methods of LW ground-wave transmission channels
Title in Chinese: 长波地波传输道计算方法
Language: English
File Format: Electronic (PDF)
Delivery: Via email within 1~3 business days
Issued on: 2002-10-30
Implemented on: 2003-03-01
Chinese Classification: M50-Radar, navigation, remote control, remote measuring and antenna synthesis
Professional Classification: SJ-Electronics
Related Keywords: ground-wave transmission channels scopethis standard
computational methods
longwave ground wave signals
electric field strength
methods
Related Topics: s8 wavelength
Photometer wavelength
wavelength emission wavelength
The wavelength of pyrene
Wavelength analysis
wave and wavelength
Between wavelengths
Wavelength analysis
Wavelength Wavelength
Dual Wavelength Photometer
waviness wavelength ratio
Zinc wavelength
Wavelength photometer
Infrared wavelength measurement method
Zinc wavelength
signal wavelength
wavelength quantification
wavelength a
Wavelength Verification
Optical wavelength calculation
Efficient long wavelength
wavelength a
wavelength strontium
Wavefront and Wavelength
electron wavelength
wavelength factor
wavelength and cm
Calculate the wavelength of light
long wave
wavelength cadmium
Wavelength performance
wavelength chlorine
liquid wavelength
Tungsten wavelength
Zinc wavelength
paper wavelength
material wavelength
TP wavelength
Compound wavelength
wavelength characteristic wavelength
electron wavelength
Beamer
energy wavelength
How to use waves
absolute wavelength
wavelength test wavelength
Dual Wavelength Test Method
wavelength wave
low wavelength
Magnesium wavelength
wavelength factor
wavelength height
wavelength factor
Enzyme wavelength
dual wavelength assay
Dual wavelength analysis sub-wavelength
Dual Wavelength and Single Wavelength
Single wavelength, dual wavelength assay
Single and Dual Wavelength
wavelength and energy
multi-wavelength meter
Anthracene wavelength
no wavelength/subwavelength
Center wavelength cm
UV single and dual wavelength
dual wavelength analysis
wavelength fourth power
sodium dual wavelength
wavelength sample
wavelength detection wavelength
metal wavelength
Fast Wavelength Meter
The wavelength of the dual wavelength method
Optical Wavelength Method
line wavelength method
bromine wavelength
Optical wavelength method
dual wavelength dominant wavelength
an 8-wavelength
wavelength detector wavelength
Single and Dual Wavelength
wavelength method method
uv+ wavelength
Emission peak wavelength wavelength
dual wavelength single wavelength
UV dual-wavelength single-wavelength
distribution of wavelength
gold wavelength
three wavelengths
TP wavelength
energy wavelength
specific wavelength
Liquid method wavelength
Wavelength detection method
Five Ways to Measure Wavelength
Test wavelength Wavelength
Single and Dual Wavelength UV
single wavelength
than long wavelength
full wavelength
Extinction wavelength and absorption wavelength
Wavelength measurement method
Light wavelength cm-1
output wavelength
water to wavelength
Infrared wavelength test method
Calculate wavelength
spatial wavelength
Calculation of Hertz and Wavelength
wavelength intensity
Enzyme wavelength
Quantification by dual wavelength method
ground wave
wavelength of water
Wavelength Chlorine Determination Method
wavelength application
wavelength of air
outer wavelength
SLR wavelength
edge wavelength
wavelength ratio
Zhang Changbo
Main wavelength Secondary wavelength
single wavelength method
Wavelength measurement Wavelength measurement
What is the wavelength
wavelength brightness
half wave transmission
Wavelength use
signal wavelength
Main wavelength Secondary wavelength
wavelength intensity
wavelength and energy
spatial wavelength
flow wavelength
Wavelength calculation
Dual wavelength method
Compound wavelength
disulfiram wavelength
Dual wavelength calculation
Pyrene wavelength Emission wavelength
The secondary wavelength is generally longer than the primary wavelength
Photometer Dual Wavelength
metal wavelength
dual wavelength single wavelength
wavelength point
Two methods of wavelength meter
Wavelength detection method
Veteran wavelength meter
crude oil wavelength
Wavelength and Intensity
fluorescent wave transmission
Calculation of wavelength
Calculate
Wavelength measurement method
Absorption wavelength
relative wavelength
Fluorescent and UV wavelengths
Five Ways to Measure Wavelength
Wavelength detector
Wavelength and Transmission
Wavelength 254nm
Detection wavelength Wavelength
single wavelength dual wavelength
Content Method Wavelength
your wavelength
wavelength shift
height wavelength
how to calculate wavelength
UV wavelength
Measuring wavelength method
long wave direction
low wavelength
Wavelength Length Wavelength Accuracy
wavelength space
wavelength detection
Response wavelength
energy and wavelength
Half Height Calculation Method
single wavelength
single wavelength and
wavelength length
Method of Measuring Wavelength
Wavelength Wavelength Analysis Method
Dual wavelength and single wavelength
Core wavelength
Single wavelength, dual wavelength, multi-wavelength
maximum wavelength
Wavelength according to
Calculation Methods for Land Surveying
Magnesium wavelength
Dual-Wavelength vs. Single-Wavelength
Potassium center wavelength
dual wavelength uv
UV Dual Wavelength vs. Single Wavelength
Single and Dual Wavelength Measurements
wavelength response
Subwavelength and Dominant Wavelength
How to calculate volatility
Excitation wavelength and emission wavelength
Wavelength measurement method
pta calculation method
How to read a Baume meter
Signal overshoot % calculation method
What are the methods for measuring the wavelength of light waves?
Road deflection value calculation method
Pipeline wind speed calculation method
Calculation method of current ripple coefficient
How to Calculate Wavelength Calibration Coefficients
Microplate reader measurement method dual wavelength method
Microwave communication equipment transmission
How to calculate polygonal acres
Baume meter calibration method
Infrared wavelength detection method

本标准规定了长波地波信号的电场强度和传播时延的计算方法。本标准适用于我国长波无线电系统垂直电天线激励的无线电信号电场垂直分量的幅度和传播时间延迟量的计算。发射和接收天线的相位中心离地高度不大于六分之一波长。


Scope

This standard specifies the calculation of the electric field strength and propagation delay of longwave ground wave signals.

Sample only — not a preview of SJ 20839-2002
Page: 1 / 0
100%

Loading PDF document...

Error loading PDF. Please make sure the file is valid and try again.

We also recommend