CN104535968B - Superhigh frequency signal whole-ship covering method applied to ocean engineering ship - Google Patents
Superhigh frequency signal whole-ship covering method applied to ocean engineering ship Download PDFInfo
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- CN104535968B CN104535968B CN201510021011.2A CN201510021011A CN104535968B CN 104535968 B CN104535968 B CN 104535968B CN 201510021011 A CN201510021011 A CN 201510021011A CN 104535968 B CN104535968 B CN 104535968B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
Abstract
The invention discloses a superhigh frequency signal whole-ship covering method applied to an ocean engineering ship. Media affecting signal transmission of the whole ship and attenuation parameters are analyzed according to the transmission and attenuation characteristic requirement of UHF signals. A UHF base station connected with a power source comprises a duplexer, a receiving amplifier, an emitting synthesizer, a relay, a coupler, a splitter, a feeder cable, an amplifier and a leaky cable, wherein the duplexer, the receiving amplifier, the emitting synthesizer and the relay are installed on a UHF superhigh frequency frame, and the coupler, the splitter, the feeder cable, the amplifier and the leaky cable are installed in a system. Field UHF monitoring sensors are economically, reasonably and accurately arranged according to the transmission and attenuation characteristic requirement of the UHF signals, the shielding effect of an engine room or some sealed areas on the signals is avoided, UHF wireless communication can be achieved at all places and areas in need on the whole ship by laying the feeder cable and distributing indoor antennas and through other means, and UHF signal whole-ship covering can be defined.
Description
Technical field
The present invention relates to IPC classifies G01S using radio wave reflection or reradiative positioning or there is detection technique,
The full ship covering method of ultra-high frequency signal especially applied on ocean engineering ship.
Background technology
UHF typically refers to ultra-high frequency wireless electric wave.Hyperfrequency Ultra High Frequency (UHF) refers to that frequency is
300-3000MHz, radio wave of the wavelength in 1m-1dm, the radio wave of the wave band are also called decimetric wave.
In ocean engineering ship and platform project, the application that the full ship of UHF (hyperfrequency) signal is covered is increasing, and
UHF signals significantly can be decayed in metal surface, it is difficult to meet operation and contact needs, as any transmission medium is to signal transmission
There is relaxation phenomenon, and affected by transmission path and distance, so when making the full ship of signal and covering, the decay of signal
Calculating is particularly important, and is designed to work(whether important criterion.
UHF signals have application in being covered in land building, large-scale place or large structure, but design and calculate relative
Simply, it is and not strict to the intensity specific requirement calculating of signal.In ocean engineering ship and platform, as cabin is
Steel plate structure, the arrangement in cabin are complex, and there is likely to be other various severe noisy environments, therefore, signal meter
Calculation requires increasingly complex, and the stringency of calculating must be given sufficiently attention.At present, the meter for covering with regard to such UHF signals
Calculation has no complete computing formula.
Chinese patent application 201410014841.8 discloses a kind of full ship signal coverage methods of UHF, according to the preliminary of system
Design, lists from rack signal source in detail to all of equipment and material on each domestic aerial path；It is complete by analysis
Ship affects the medium and attenuation parameter of signal transmission, adjusts line arrangement scheme, and by appropriate entirety or local signal
Compensation, is finally reached the requirement for meeting design.According to the propagation and attenuation characteristic requirement of UHF signals, for live UHF radiation is passed
The economical rationality exact layout of device is led, ensures the integrity of system design by way of signal compensation, reduce there may be
Risk.Meet outside speech communication, the data transfer of sensor and instrument, the application of the function such as personal security monitoring will all pass through
UHF signals are covered and are achieved.
The content of the invention
It is an object of the invention to provide a kind of full ship covering method of the ultra-high frequency signal applied on ocean engineering ship,
Relatively inexpensive measure is effectively realized covering in the sufficient intensity ultra-high frequency signal of full ship scope.
The purpose of the present invention will be realized by following technical measures：According to the propagation and attenuation characteristic requirement of UHF signals,
Analyzing full ship affects the medium and attenuation parameter of signal transmission, the UHF base stations being connected with power supply to include pacifying on UHF hyperfrequency framves
Dress duplexer, reception amplifier, transmitting synthesizer, the bonder installed in repeater, and system, splitter, feeder cable,
Amplifier and leaky cable, calculate whether the signal intensity in appointed place and region meets design requirement；And consider signal
The surplus capacity of covering, from affecting the various factors of signal attenuation to be analyzed and calculate, is protected by way of signal compensation
Card system, is arranged to domestic aerial and feeder cable in advance, and area of aircraft cabins or long and narrow passage area adopt leaky cable
Lay, the installation for laying the cable that avoid that netting twine is communicated in uhf band, cabin and domestic aerial of leaky cable is taken at cabin
The centre position of room, when having heavy mechanical equipment in cabin, the position of antenna is made to adapt to adjustment, and whole system network is using tree-like
Network structure；According to Preliminary design, signal source is listed from rack in detail to all of equipment on each domestic aerial path
And material, the strength retrogression of signal is mainly reflected in narrowing for signal wave amplitude, but the intensity of signal can be led to after being converted into logarithm
Cross the form calculus of summation；According to equation below：
Domestic aerial power=signal source output-combiner loss-coupler loss-feeder cable loss+amplify
Device amplifies the amplification dB multiples of dB multiples-leaky cable loss+domestic aerial；
According to each equipment or the attenuation parameter of element and material, the power of domestic aerial terminal is calculated；
The loss of wherein cable is considered as length and cable different model specification；
Used as general theoretical calculation formula, in practical situation, each branched line there may be multiple the formula
The situation of power divider and bonder, needs count all data；
Domestic aerial terminal radiation power of the above-mentioned result of calculation only as Theoretical Calculation, in addition it is also necessary to according to signal radiation
Space loss assesses the intensity of signal within the specified range to calculate, and whether investigation meets the minimum reception electricity of receiver requirement
It is flat, to determine whether design meets the requirements；
Under normal circumstances, in the case where overall signal intensity is on the weak side, front end adds power amplifier to have system
The compensation of effect, but where regional area difference in signal strength, it is only necessary to power amplifier is added in rear end；For some regions
Area is big, and in the case that domestic aerial is difficult to be completely covered, signal covering is reached by laying leaky cable in the region will
Ask.
Especially, duplexer, reception amplifier, transmitting synthesizer and five repeaters are installed on UHF hyperfrequencies frame,
Tri- road power dividers of UHF hyperfrequency framves Shang connect base station, four road power dividers by 42M or 46M feeder cables respectively
And second three road power divider, the base station is in more than deck 42600A.B. and picks out room by 35M feeder cables
Outside antenna to antenna field, additionally, UHF hyperfrequencies frame by two road BFOU marine specials cables connect respectively 220V panels or
Ups power；Described second three road power dividers pick out three circuits, and one is connected to positioned at top by 40M feeder cables
The domestic aerial of layer more than deck 38300A.B., its two tunnel is connected to positioned at flying bridge deck by 20M feeder cables
The domestic aerial of more than 35000A.B., its three tunnel are bridged in turbine control room, i.e. Fig. 1 by 36M feeder cablesInstitute
Tetra- road power dividers of Shu connect four circuits, and one is connected to more than D decks 30700A.B. by 19M feeder cables
The domestic aerial in corridor, its two domestic aerial for being connected to C decks 27400A.B. above corridor by 15M feeder cables, which three
The domestic aerial in B decks 24100A.B. above corridor is connected to by 19M feeder cables, its four tunnel is connected by 12M feeder cables
It is connected to lower floor corridor；The 12M feeder cables come by second three road power divider connection of UHF hyperfrequency framves are connected to the 3rd
Three road power divider of portion, the 3rd three road power dividers connect three circuits, and which passes through respectively with its two tunnel all the way
15M and 6M feeder cables are connected to the domestic aerial in A decks 20800A.B. above corridor, and its three tunnel is connected by 7M feeder cables
Be connected to second four road power divider in corridor, this second four road power dividers connect four circuits, its all the way and
Its two tunnel is connected to the domestic aerial in main deck 17500A.B. above corridor respectively by 15M and 6M feeder cables, and its three tunnel leads to
The domestic aerial that 22M feeder cables are connected to one layer of tweendeck 12600A.B. above dining room is crossed, its four tunnel passes through 15M feeder lines
Three four road power dividers of the cable connection to lower floor corridor, the 3rd four road power dividers connect four lines
Road, which is all the way and its two tunnel is connected to cabin 9100A.B. above corridor between Tween deck by 32M and 12M feeder cables respectively
Domestic aerial, its three tunnel are connected to the domestic aerial in three floor tweendeck 5600A.B. above corridors by 101M feeder cables,
Its four tunnel is connected to the domestic aerial in hold 2900A.B. above corridor by 108M feeder cables；Turbine control indoor location is fixed
To amplifier, the orientation amplifier is non-not to be connected to the 4th three road power dividers and the 5th by 2M and 45M feeder cables
Three road power divider of portion, the 4th three road power dividers connect three circuits, and which leads up to 50M feeder cables company
Superstructure deck 30500A.B. above exterior aerials are connected to, its two tunnel is connected to deck 14000A.B. by 6M feeder cables
The domestic aerial of above turbine control room, its three tunnel reveal the 4th four road power dividers of cable connection by 200M, and this
Four four road power dividers connect four circuits, and which reveals cable connection to one by a 102M respectively with its two tunnel all the way
Layer tweendeck 12600A.B. above corridor domestic aerial, its three tunnel connect on UHF hyperfrequency framves the by 36M feeder cables
Two three road power dividers, its four tunnel are connected to drilling platforms 31000A.B. above helicopter platforms by 170 feeder cables
Domestic aerial；The 5th three road power dividers connect three circuits, and which passes through 120M respectively with its two tunnel all the way
And 90M reveals cable and is connected respectively to more than a floor tweendeck 12600A.B. between a number turbine domestic aerial and Tween deck
No. three turbine domestic aerials of more than cabin 9100A.B., its three tunnel reveal three floor tweendeck 5600A.B. of cable connection by 120M
Above low-voltage distribution domestic aerial.
Especially, by BFOU marine specials cable connection to TB terminal boards, TB terminal boards pick out three circuits point to power supply
Not Lian Jie a UHF base stations SA PU/UHF base station powers, three UHF base stations SA is logical positioned at DP backups room, broadcast respectively
News region and DP control driver's cabins, the UHF base stations SA is respectively that UHF base stations handheld terminal is connected with a HS/UHF, and, it is described
UHF base stations SA picks out ABS antenna for base station each via 50 ohm of RG214 coaxial cables of solid insulation, and these antenna is in first
More than 42600A.B. above plate；Wherein, BFOU marine specials cable specification 2 × 2.5.
Especially, orient amplifier and pass through BFOU marine special cable connection 220V emergency switchboards.
Advantages of the present invention and effect：According to the propagation and attenuation characteristic requirement of UHF signals, for live UHF monitorings are passed
The economical rationality exact layout of sensor, overcomes the screen effect of cabin or some closed areas to signal, by laying feeder line electricity
Cable and the distribution means such as domestic aerial so that the complete any place in need of ship and region, can realize that UHF radio communications can be with
It is defined as the full ship of UHF signals to cover.Convenient for installation and maintenance, low cost, fault rate are low without the need for power supply, easy for installation, and noiseless is tired out
Product, many advantages, such as.Hardware cost and operating expenses can be controlled, high gain, bandwidth, standing-wave ratio are little, enhance electromagnetism letter
Number receive and transmitting capacity, it is to avoid signal is disturbed, and can improve data transmission quality.
Description of the drawings
Fig. 1-3 is a kind of antenna arrangement mounting structure of implementation method of the full ship covering of UHF signals in the embodiment of the present invention 1
Schematic diagram, wherein Fig. 2 pass throughWith connection in Fig. 1, Fig. 3 passes throughWith connection in Fig. 1.
Fig. 4 is UHF antenna for base station arrangement schematic diagrams in the embodiment of the present invention 1.
Reference includes：TB：Terminal terminal boards, BDA：By-direction ampliifier orientation amplifiers,
SA：Lightning arrestor spark gaps, PU/UHF：Power supply unit for base station base stations electricity
Source, HS/UHF：Handset for UHF base station UHF base stations handheld terminal, BAS/UHF：UHF base
Station UHF base stations, ABS：Antenna for base station antenna for base station, ARO：antenna for UHF
UHF relay antennas, ARI outside repeater for outdoor ues rooms：antenna for UHF repeater for
UHF relay antennas, DIV2/UHF in INdoor ues rooms：power spliter(1：4) four road power dividers, DIV1/UHF：
power spliter(1：3) three road power dividers, RACK/UHF：UHF hyperfrequency framves.
Specific embodiment
The principle of the invention is, with reference to ocean engineering ship practical situation, from the various factors for affecting signal attenuation
It is analyzed and calculates, draws reliable gross data conclusion, and the complete of system design can be ensured by way of signal compensation
Whole property, reduces project risk that may be present in later stage production building course.Main research is by analyzing full ship
The medium and attenuation parameter of signal transmission, the UHF base stations being connected with power supply is affected to include duplex is installed on UHF hyperfrequency framves
Device, reception amplifier, transmitting synthesizer, install in repeater, and system such as bonder, splitter, feeder cable, amplification
Device, leaky cable etc., calculate whether the signal intensity in appointed place and region meets design requirement.Research further contemplates signal and covers
The surplus capacity of lid, to meet the error requirement that is likely to occur in actual production building course, it is to avoid go wrong at the scene to
Duration and material bring unnecessary waste.
According to the propagation and attenuation characteristic requirement of UHF signals, for live UHF monitors the accurate cloth of economical rationality of sensor
Office, is arranged to domestic aerial and feeder cable, area of aircraft cabins in advance, and long and narrow passage area is typically applied using leaky cable
If leaky cable lays the cable that avoid that netting twine etc. is communicated in uhf band, and the installation of cabin and domestic aerial typically takes
In the centre position in cabin, the position for having heavy mechanical equipment, antenna in cabin adjusts, and whole system network adopts tree type network
Network structure.
According to Preliminary design, list from rack signal source in detail to all of equipment on each domestic aerial path and
Material.In order to signal can be covered, such as to a certain zone routing of cabin may through signal synthesizer, bonder, feeder cable,
Amplifier, power divider, leaky cable etc..The strength retrogression of signal is mainly reflected in narrowing for signal wave amplitude, but is converted into
After logarithm, the intensity of signal can pass through the form calculus of summation.
According to equation below：
Domestic aerial power=signal source output-combiner loss-coupler loss-feeder cable loss+amplify
Device amplifies the amplification dB multiples of dB multiples-leaky cable loss+domestic aerial
According to each equipment or the attenuation parameter of element and material, the power of domestic aerial terminal is calculated.
The loss of wherein cable is considered as length and cable different model specification.
Used as general theoretical calculation formula, in practical situation, each branched line there may be multiple the formula
The situation of power divider and bonder, needs count all data.
Domestic aerial terminal radiation power of the above-mentioned result of calculation only as Theoretical Calculation, in addition it is also necessary to according to signal radiation
Space loss assesses the intensity of signal within the specified range to calculate, and whether investigation meets the minimum reception electricity of receiver requirement
It is flat, to determine whether design meets the requirements.
Under normal circumstances, in the case where overall signal intensity is on the weak side, front end adds power amplifier enter to system
Row is effectively compensated, but where regional area difference in signal strength, it is only necessary to power amplifier is added in rear end.For some
Region area is big, in the case that domestic aerial is difficult to be completely covered, can reach letter by laying leaky cable in the region
Number cover require.
The present invention is to overcome the screen effect of cabin or some closed areas to signal, by laying feeder cable and distribution
The means such as domestic aerial so that the complete any place in need of ship and region, can realize that UHF radio communications can be defined as
The full ship of UHF signals is covered.
The present invention is analyzed with ocean engineering ship and platform as embodiment, and the factor to affecting signal transmission is ground
Study carefully and calculate, draw reliable calculating and analysis model, trial is applied in other similar projects.
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1：As shown in Figure 1, on UHF hyperfrequencies frame install duplexer, reception amplifier, transmitting synthesizer and
Five repeaters, tri- road power dividers of UHF hyperfrequency framves Shang connect base station, four tunnels by 42M or 46M feeder cables respectively
Power divider and second three road power divider, the base station are in more than deck 42600A.B. and pass through 35M feeder lines
Cable picks out exterior aerial to antenna field, additionally, UHF hyperfrequencies frame connects 220V respectively by two road BFOU marine specials cables
Panel or ups power；Described second three road power dividers pick out three circuits, and one is connected by 40M feeder cables
To the domestic aerial positioned at more than top layer deck 38300A.B., its two tunnel is connected to positioned at driver's cabin first by 20M feeder cables
The domestic aerial of more than plate 35000A.B., its three tunnel are bridged in turbine control room, i.e. Fig. 1 by 36M feeder cables
Four described road power dividers connect four circuits, one by 19M feeder cables be connected to D decks 30700A.B. with
The domestic aerial in upper corridor, its two domestic aerial for being connected to C decks 27400A.B. above corridor by 15M feeder cables, its
Three domestic aerials that B decks 24100A.B. above corridor is connected to by 19M feeder cables, its four tunnel pass through 12M feeder cables
It is connected in lower floor corridor, i.e. Fig. 1
In aforementioned, as shown in Figure 2, in map interlinking 1Connected by second three road power divider of UHF hyperfrequency framves
The 12M feeder cables for fetching are connected to the 3rd three road power dividers, and the 3rd three road power dividers connect three
Circuit, which is connected to the interior in A decks 20800A.B. above corridor all the way respectively with its two tunnel by 15M and 6M feeder cables
Antenna, its three tunnel are connected to second four road power divider in corridor, this second four road power point by 7M feeder cables
Prop connects four circuits, and which is connected to main deck 17500A.B. by 15M and 6M feeder cables respectively with its two tunnel all the way
The domestic aerial in above corridor, its three tunnel are connected to a floor tweendeck 12600A.B. above dining rooms by 22M feeder cables
Domestic aerial, its four tunnel are connected to the 3rd four road power dividers in lower floor corridor by 15M feeder cables, the 3rd four
Road power divider connects four circuits, and which is connected to two floor first by 32M and 12M feeder cables respectively with its two tunnel all the way
The domestic aerial in cabin 9100A.B. above corridor between plate, its three tunnel is connected to three floor tweendeck by 101M feeder cables
The domestic aerial in more than 5600A.B. corridors, its four tunnel are connected to hold 2900A.B. above corridor by 108M feeder cables
Domestic aerial；
In aforementioned, as shown in Figure 3, turbine control indoor location orientation amplifier, the orientation amplifier is non-Tong Guo not 2M
The 4th three road power dividers and the 5th three road power dividers, the 4th three road work(are connected to 45M feeder cables
Rate splitter connects three circuits, and which leads up to 50M feeder cables and is connected to superstructure deck 30500A.B. above room
Outside antenna, its two tunnel are connected to the domestic aerial of deck 14000A.B. above turbine control rooms, Qi Sanlu by 6M feeder cables
The 4th four road power dividers of cable connection are revealed by 200M, the 4th four road power dividers connect four lines
Road, which is revealed cable connection by a 102M respectively with its two tunnel all the way and walks gallery room to more than a floor tweendeck 12600A.B.
Internal antenna, its three tunnel connect second three road power divider on UHF hyperfrequency framves by 36M feeder cables, i.e. in Fig. 1Its four tunnel is connected to the domestic aerial of drilling platforms 31000A.B. above helicopter platforms by 170 feeder cables；It is described
5th three road power dividers connect three circuits, and which passes through 120M and 90M respectively with its two tunnel all the way and reveals cable point
Between a number turbine domestic aerial and Tween deck cabin 9100A.B. more than three is not connected to more than a floor tweendeck 12600A.B.
Number turbine domestic aerial, its three tunnel are revealed in three floor tweendeck 5600A.B. above low-voltage distributions room of cable connection by 120M
Antenna.
In aforementioned, orientation amplifier passes through BFOU marine special cable connection 220V emergency switchboards.
In aforementioned, BFOU marine special cables, ocean engineering is with ethylene propylene rubber insulated halogen-free flameproof medium-pressure power cable.
In aforementioned, as shown in Figure 4, by BFOU marine specials cable connection to TB terminal boards, TB terminal boards connect power supply
Go out the PU/UHF base station powers that three circuits connect a UHF base stations SA respectively, three UHF base stations SA is standby positioned at DP respectively
Part room, broadcast communication region and DP control driver's cabins, the UHF base stations SA is respectively that UHF base stations handheld terminal connects with a HS/UHF
Connect, and, the UHF base stations SA picks out ABS antenna for base station each via 50 ohm of RG214 coaxial cables of solid insulation, these
Antenna is in more than 42600A.B. above deck；Wherein, BFOU marine specials cable specification 2 × 2.5.
In the present invention, BAS/UHF：UHF base station UHF base station applies AC220V60HZ power supplys.
It is portable that all of calculating and detection are all based on 450mhz frequencies, 4 watts of (36dbm) Motorola DGP6150
Carry out under the conditions of wireless maximum transmission power.
The use of the Andrew cable attenuations of the LDF4RK-50A of 450MHz is 4.749db/100m, using 450MHz's
RCT4-WBC-1X-RNA leaky cables decay to 4.4db/100m.
The loss of adapter=(0.05 √ f (GHz)) x2=(0.05 √ 0.450) x2=(0.05 (0.62)) x2=
0.034x 2=0.068db.
Used as typical receiver, sensitivity is -120dbm to hyperfrequency hand-held portable radio, there is 30dbm rooms
Internal antenna is lost and 15dbm filter losses.In addition, the absorption and cable itself affect in infrastructure metal structure is also deposited
.
In drilling ship closed area, there is 6dBm losses in portable intercom set operator set device itself.And on deck
On, there is free space loss in 50 meters of open antennas in portable intercom set, affect portable radio received signal strength.
FSL=32.4+20Log (D)+20log (F),
Here D represents that parasang is km, and it is MHz that F is cps.
FSL=32.4+20Log (0.05)+20Log (450)=32.4-26.02+53.06=59.44dbm；
According to above analog data, analysis, the signal positioned at domestic aerial below upper deck are portable for 4 watts of 36dBm
Formula transmitter receiver ultra-high frequency signal needs the impact for reducing signal skew and blocking.
Signal value=36dbm-10dbm (loss of repeater) -5dbm (3W distribution losses) -2.06dbm (cable loss) -
5dbm (3W distribution losses) -1.97dbm (40m cable loss)+2.15dbm (domestic aerial gain) -30dbm (obstacle consumption) -
59.44dbm (quick one way link loss) -6dbm (its body loss)=- 81.32dbm.
As, in-door covering is 50 meters apart from antenna, the working region on deck should be included, portable intercom set it is sensitive
Degree should be higher than -119dbm.Therefore, -81.32dBm transmission signals are based on Theoretical Calculation in the range of acceptance, with practical situation
May be different.
Cover in the full ship of deckhouse top test UHF signals and obtain parameter：
Claims (2)
1. the full ship covering method of ultra-high frequency signal applied on ocean engineering ship, it is characterised in that according to the biography of UHF signals
Broadcast and require with attenuation characteristic, analyzing full ship affects the medium and attenuation parameter of signal transmission, the UHF base stations bag being connected with power supply
Include and duplexer, reception amplifier, transmitting synthesizer, the coupling installed in repeater, and system are installed on UHF hyperfrequency framves
Device, splitter, feeder cable, amplifier and leaky cable, whether signal intensity of the calculating in appointed place and region meets sets
Meter is required；And the surplus capacity that consideration signal is covered, from affecting the various factors of signal attenuation to be analyzed and calculate, lead to
The mode for crossing signal compensation ensures system, and in advance domestic aerial and feeder cable are arranged, area of aircraft cabins or long and narrow logical
Road region is laid using leaky cable, and leaky cable lays the cable that avoid that netting twine is communicated in uhf band, cabin and room
The installation of internal antenna is taken at the centre position in cabin, and when having heavy mechanical equipment in cabin, the position of antenna is made to adapt to adjustment, whole
Individual grid adopts tree network structure；According to Preliminary design, signal source is listed from rack in detail to each indoor day
All of equipment and material on thread path, the strength retrogression of signal are mainly reflected in narrowing for signal wave amplitude, but are converted into logarithm
The intensity of signal can pass through the form calculus of summation afterwards；According to equation below：
Domestic aerial power=signal source output-combiner loss-coupler loss-feeder cable loss+amplifier is put
The amplification dB multiples of big dB multiples-leaky cable loss+domestic aerial；
According to each equipment or the attenuation parameter of element and material, the power of domestic aerial terminal is calculated；
The loss of wherein cable is considered as length and cable different model specification；
Used as general theoretical calculation formula, in practical situation, each branched line there may be multiple power to the formula
The situation of splitter and bonder, needs count all data；
Domestic aerial terminal radiation power of the above-mentioned result of calculation only as Theoretical Calculation, in addition it is also necessary to according to the space of signal radiation
It is lost to calculate the intensity for assessing signal within the specified range, whether investigation meets the minimum receiving level of receiver requirement, with
It is determined that whether design meets the requirements；
In the case where overall signal intensity is on the weak side, front end adds power amplifier effectively to compensate system, but in office
Where portion's zone signal intensities difference, it is only necessary to add power amplifier in rear end；It is big for some regions area, domestic aerial
In the case of being difficult to be completely covered, reach requirement for signal coverage by leaky cable being laid in the region；On UHF hyperfrequency framves
Duplexer, reception amplifier, transmitting synthesizer and five repeaters, tri- road power dividers of UHF hyperfrequency framves Shang are installed
Base station, four road power dividers and second three road power divider are connected by 42M or 46M feeder cables respectively, it is described
Base station is in more than deck 42600A.B. and picks out exterior aerial to antenna field by 35M feeder cables, additionally, UHF hyperfrequencies
Frame connects 220V panels or ups power respectively by two road BFOU marine specials cables；Described second three road branched powers
Device picks out three circuits, and one is connected to the domestic aerial positioned at more than top layer deck 38300A.B. by 40M feeder cables,
Its two tunnel is connected to the domestic aerial positioned at more than flying bridge deck 35000A.B. by 20M feeder cables, and its three tunnel passes through
36M feeder cables are bridged to turbine control room；Four described road power dividers connect four circuits, and one is presented by 19M
Domestic aerial of the line cable connection to D decks 30700A.B. above corridor, which two is connected to C decks by 15M feeder cables
The domestic aerial in more than 27400A.B. corridors, which three is connected to B decks 24100A.B. above corridor by 19M feeder cables
Domestic aerial, its four tunnel are connected to lower floor corridor by 12M feeder cables；By second three road power point of UHF hyperfrequency framves
The 12M feeder cables that prop connection comes are connected to the 3rd three road power dividers, the 3rd three road power divider connections
Go out three circuits, which is connected to A decks 20800A.B. above corridor by 15M and 6M feeder cables respectively with its two tunnel all the way
Domestic aerial, its three tunnel is connected to second four road power divider in corridor, second four tunnel by 7M feeder cables
Power divider connects four circuits, and which is connected to main deck by 15M and 6M feeder cables respectively with its two tunnel all the way
The domestic aerial in more than 17500A.B. corridors, its three tunnel are connected to a floor tweendeck 12600A.B. by 22M feeder cables
The domestic aerial of above dining room, its four tunnel are connected to the 3rd four road power dividers in lower floor corridor by 15M feeder cables,
3rd four road power dividers connect four circuits, and which is connected by 32M and 12M feeder cables respectively with its two tunnel all the way
The domestic aerial in cabin 9100A.B. above corridor between Tween deck is connected to, its three tunnel is connected to three floor first by 101M feeder cables
The domestic aerial in cabin 5600A.B. above corridor between plate, its four tunnel is connected to more than hold 2900A.B. by 108M feeder cables
The domestic aerial in corridor；Turbine control indoor location orientation amplifier, the orientation amplifier is non-Tong Guo not 2M and 45M feeder cables
The 4th three road power dividers and the 5th three road power dividers are connected to, the 4th three road power dividers connect
Three circuits, which leads up to 50M feeder cables and is connected to superstructure deck 30500A.B. above exterior aerials, Qi Erlu
The domestic aerial of deck 14000A.B. above turbine control rooms is connected to by 6M feeder cables, its three tunnel is revealed by 200M
The 4th four road power dividers of cable connection, the 4th four road power dividers connect four circuits, its all the way and its
Cable connection is revealed to a floor tweendeck 12600A.B. above corridor domestic aerial, Qi Sanlu by a 102M respectively in two tunnels
Second three road power divider on UHF hyperfrequency framves are connected by 36M feeder cables, its four tunnel is connected by 170 feeder cables
It is connected to the domestic aerial of drilling platforms 31000A.B. above helicopter platforms；The 5th three road power dividers connect
Three circuits, which is revealed cable by 120M and 90M respectively with its two tunnel all the way and is connected respectively to a floor tweendeck
No. three turbine domestic aerials of more than cabin 9100A.B. between turbine domestic aerial of more than 12600A.B. and Tween deck, which three
Road three floor tweendeck 5600A.B. above low-voltage distribution domestic aerials of cable connection are revealed by 120M.
2. the full ship covering method of ultra-high frequency signal applied on ocean engineering ship as claimed in claim 1, its feature exist
In orientation amplifier passes through BFOU marine special cable connection 220V emergency switchboards.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2119034U (en) * | 1992-04-13 | 1992-10-14 | 西安电子科技大学 | Full direction base station antenna |
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| JPH0646219B2 (en) * | 1987-09-03 | 1994-06-15 | 住友重機械工業株式会社 | Bottom and side detectors for continuous unloader |
| US6474256B1 (en) * | 2001-07-20 | 2002-11-05 | Shore-Mate Industries, Inc. | Dinghy lift |
| US8130155B2 (en) * | 2008-07-16 | 2012-03-06 | R.A. Miller Industries, Inc. | Marine multiband antenna |
| FR2977358B1 (en) * | 2011-06-29 | 2013-08-09 | Gilles Vaquin | WARNING SYSTEM OF HAZARDOUS SITUATIONS IN AGGRESSIVE ENVIRONMENT |
| CN203057524U (en) * | 2012-12-13 | 2013-07-10 | 哈尔滨飞羽科技有限公司 | Improved EPIRB (Emergency Position Indication Radio Beacon) |
| CN103744060B (en) * | 2014-01-13 | 2016-02-24 | 上海中远船务工程有限公司 | The full ship signal coverage method of UHF |
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| CN2119034U (en) * | 1992-04-13 | 1992-10-14 | 西安电子科技大学 | Full direction base station antenna |
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