field proven performance – industrial grade support data-linc group radio mobile rf site surveys
Post on 26-Mar-2015
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Field Proven Performance Industrial Grade Support DATA-LINC GROUP Radio Mobile RF Site Surveys Slide 2 2 Topic Choices Introduction Maps & Pictures Unit Properties Networks Properties Resolve Paths Generate Reports Tips & Examples Closing Comments 1. Preliminary Design 2. Software RF Study 3. On-site Survey 4. Feasibility Review 5. Implement Project Steps Slide 3 3 Radio Mobile is freeware software Written by a radio amateur Roger Coude (9VE2DBE) for radio amateurs Operates from 20MHz to 20GHz Based on Irregular Terrain (Longley-Rice) propagation model Is intended for longer distance outdoor applications Download and information at: http://www.cplus.org/rmw/english1.html http://www.cplus.org/rmw/english1.html Radio Mobile User Group: http://groups.yahoo.com/group/Radio_Mobile_Delu xe/ http://groups.yahoo.com/group/Radio_Mobile_Delu xe/ Radio Mobile Software Slide 4 4 Radio Mobile Screen Slide 5 5 Data can be accessed online or purchased Elevation Data SRTM (Shuttle Radar Topography Mission) DTED, GTOPO30, GLOBE, BIL Street maps Tiger, OpenStreetMap Images and ground cover Landsat, Terraserver, Toporama, Land Cover Elevation & Map Merges Slide 6 6 Topological data is available for most of the world List of sources: ttp://www.cplus.org/rmw/dataen.htmlttp://www.cplus.org/rmw/dataen.html Shuttle Radar Topography Mission (SRTM) Info and data from Jet Propulsion Laborary: http://www2.jpl.nasa.gov/srtm/ http://www2.jpl.nasa.gov/srtm/ Data is freely available via FTP: ftp://e0srp01u.ecs.nasa.gov/srtm/ ftp://e0srp01u.ecs.nasa.gov/srtm/ The FTP site is heavily used and is taken down for maintenance on Wednesday nights Various resolutions (1 and 3 arcsec, others) There are some holes where data are not available SRTM Elevation Maps Slide 7 7 Site locations Latitude/Longitude coordinates Acceptable antenna elevations above ground Radio specifications (Radiosys.dat) Transmitter Receiver Antenna and coax Network design criteria Line Of Sight (LOS) Fade Margin User Provided Information Slide 8 8 For ISM bands (900MHz, 2.4GHz, 5.8GHz) and RF paths less than 50km: Rainfall is not a consideration Climate setting = Continental temperate May not be valid for air to ground applications Typically for 1km+ distances Longley-Rice ITS Slide 9 9 Check for web update under Help Confirm Radiosys.dat contains Data-Linc radio systems (FileNetworks PropertiesSystems) Confirm Radio Mobile Configuration Slide 10 10 Application information Obtain site coordinates and useable antenna heights Identify the master site(s) Identify the preferred wireless product Using Radio Mobile Prepare maps and map pictures Enter Unit (site) Properties Define and analyze All Masters Network Resolve RF path issues Prepare Site Survey report Site Survey Steps Slide 11 Prepare Map and Picture Merges Slide 12 12 Estimate Lat/Lon for map center (master site?) Estimate map size in km and display size Set OptionsInternet for SRTM data and region Define the Elevation Data Source Slide 13 13 SRTM USA 1 Arcsecond Regions Slide 14 14 FileMap properties Define Map Properties Slide 15 15 FilePicture properties to suit your needs Picture Properties Gray scaled Colored Slope Rainbow Slide 16 16 EditMerge Pictures Streets and Other Map Merges Internet Tiger - USA Slide 17 Unit Properties Slide 18 18 Build the map first so unit elevation can be extracted from the map FileUnit properties Notice a unit can be placed at the cursor position on the map Entering Unit (Site) Information Slide 19 19 Coordinates can be entered as: 47 34 21 47 34.35 47.5725 An example coordinate units converter: http://www.jeepreviews.com/wireless-gps- coordinates/ http://www.jeepreviews.com/wireless-gps- coordinates/ Entering LAT/LON Coordinates Slide 20 Define Network(s) Slide 21 21 Radio Mobile can be used for applications with a single network of two radios to multiple networks of many radios A SRM master with several slaves can be a network A repeater with attached slaves can be another network A system is a radio, antenna, coax, lightning arrestor, connectors, etc. What is Network and System? Slide 22 22 This will be the starting point for analysis For the All Masters network Set RF band frequencies Set network topology (typically voice) Set the Systems (radio, antenna, coax combinations) Set RF path style based on Rx Relative (fade margin) Add units (members) to the network and Set role to master Choose a system (use omni antenna at this point) If known set antenna elevation AGL Build an All Masters Network Slide 23 23 FileNetworks Properties Networks Parameters Slide 24 24 Networks Topology Slide 25 25 Networks Systems Slide 26 26 Networks Membership Slide 27 27 Networks Style Slide 28 Resolve RF Paths Slide 29 29 Objective here is to minimize your time and labor by quickly determining path issues and application feasibility Requires All Masters network Objective & Requirements Slide 30 30 Use the Radio Link Tool Filter paths using NetworksStyles ToolsNetwork Report Consider possibilities Change unit system (antenna sub-system)? Adjust unit elevation AGL? Different wireless product? Other repeater sites? Mixed wired/wireless solution? Formulate a solution plan Basic Activities Slide 31 31 Possibly create a network for the master and each repeater Assign units to appropriate network(s) Multiple RF links from master and repeaters to a unit (site) is desirable (alternate paths) Caution: Antenna height and system (ant/coax/radio) for the same site are not linked in each network Set units role in network (master/repeater/slave) Adjust antenna elevation AGL, System type (omni/yagi/coax) for each unit Repeat previous steps until satisfied Implement the Plan Slide 32 32 Radio Link Tool Slide 33 Generate Report Slide 34 34 Report details based on feasibility and survey funding Quick and minimal Thorough and complete Reports are often the foundation for on-site surveys Reporting Comments Slide 35 35 MS Word report template Screen capture software such as Snagit or Paint Shop Pro Radio Mobile: Pictures RF path cross-section screen captures Network report Data-Linc parts list Findings summary and possible concerns Report Generation Tools Slide 36 Tips & Examples Slide 37 37 Using Google Earth When a radio will be mounted at antenna elevation adjust unit elevation to keep coax short Other Features and Tips Slide 38 38 Desired Radio: SRM7210E? Site Details: Master3601'12"N08753'57W 40ft N Tank3606'12"N08747'01W 100ft TH Tank3604'35N08747'46W 75ft CR Tank3603'42"N08754'47W 100ft CC Tank3605'24N08746'31W 75ft PS13605'06"N08747'08W 10ft IS Tank3605'08"N08747'46"W 60ft Heights are Above Ground Level (AGL) Example Network 1 Slide 39 39 Desired Radio: PLR5000 Site Details: Master4339'42"N11616'25W 10m Repeater 14340'52N11614'29W 15m Repeater 24340'18N11613'49W 20m PS 14341'26"N11614'44W 4.5m PS 24340'42"N11613'58W 10m PS 34340'22"N11611'53W 15m Example Network 2 Slide 40 40 Prefer SRM6000 radios Antenna elevations not to exceed 30 feet Site Details: Master3812'07"N 12041'21W HWY 493812'08"N 12041'42W SunSet3811'32"N 12041'20W OakShadows3811'08"N 12039'42W WT13811'15"N12040'04W Example Network 3 Slide 41 Field Proven Performance Industrial Grade Support DATA-LINC GROUP Thank You!