Revised GPS RR Power Calculation

0267-EX-CN-2016 Text Documents

General Dynamics

2016-12-01ELS_185059

Rossevelt  R2209C   GPS  L1/L2  Band   Indoor  Repeater  Site       Building  Layout  For  100?   Radius  RF  Exposure       Omni  DirecFonal  Antenna   Ceiling  Mounted  PoinFng   Downward:  Hemispherical   PaMern  –  Highest  Gain  Is   at  the  Zenith  as  shown  by   the  Red  Circle.   XMIT  Antenna  LocaFon   Mark  Stuart   11/28/16  

21?   12?   XMIT  Antenna  LocaFon   Mark  Stuart   11/28/16  

RF  COMPONENTS:     (1)  Repeater;  Brand  GPS  Source:  Model  GLI-­‐METRO     L1/L2  Filtered  with  ERP  Control,  OscillaJon  Detect,  Antenna  Alarm  Monitoring,  RS232,  Power  110/6.8,    N-­‐female,  Power  “ON/OFF”     (1)  Transmit  Antenna:  Fixed  Base  –  Omni  DirecJonal  (facing  downward)   Room  R2209C:  Antcom;  p/n-­‐3G1215P-­‐XN-­‐4   L1  Gain:  +.4dB  @  Zenith   L2  Gain:  +1.5dB  @  Zenith   LocaJon:    33deg.  27’  36”  N    111deg.  54’  19.41”  W     (1)  Receive  Antenna:  Fixed  Base   Roof  above  R2219A:  Antcom;  p/n-­‐3G1215A-­‐XN-­‐1   LNA  Gain:  +33dB  max   LocaJon:  33deg.  27’  37.88”  N        111deg.  54’  19.91”  W       RF  CalculaFons:     Repeater  Pre-­‐Amplifier  Input  Power:  Atmospheric  Variable  from  -­‐130dBm  to  -­‐95dBm       Pre-­‐Amplifier  Output  to  Repeater  Input  Power:  Atmospheric  Variable  from  -­‐110dBm  to  -­‐75dBm       Repeater  Output:   L1-­‐Band:  Regulated  at  -­‐67dBm   L2-­‐Band:  Regulated  at  -­‐69dBm     Total  Line  Loss  from  Repeater  to  XMIT  Antenna:  -­‐5dB     L1-­‐Band  XMIT  Antenna  Feed  Point  RF  Input  Power:  -­‐72dBm   L2-­‐Band  XMIT  Antenna  Feed  Point  RF  Input  Power:  -­‐74dBm         SEE  NEXT  PAGE  FOR  CALCULATIONS   Mark  Stuart   11/28/16  

Component Signal Level Manufacturer Part Number Notes GPS Received Signal -110 to -149 dBm (-130dBm typ) Repeater Regulated Output -67 dBm GLI-METRO Auto Regulated at -67dBm Cable Loss -5 dB Line Loss from Repeater to Tx Antenna GPS Transmit Power -72 dBm L1-Band XMT Antenna RF Input Power Repeater Antenna Gain 0.4 dB Antcom 3G1215P-XN-4 Ptmax -71.6 Path Loss @ 48.3m -70.1 dB Path Loss = 20 Log F (MHz) + 20 Log d (m) - 27.55 EIRP @ 48.3m from Bldg -141.7 dBm/24 MHz 1575.42 MHz Frequency L1 30 m Outside Bldg 18.3 m Antenna to Bldg Walls 48.3 m Total Distance PR (EIRP) = Ptmax - 20log f -20log (30 +d) +27.55 = -71.6 - 63.95 - 33.68 + 27.55 = -141.7 dBm/24 MHz Component Signal Level Manufacturer Part Number Notes GPS Received Signal -110 to -149 dBm (-130dBm typ) Repeater Regulated Output -69 dBm GLI-METRO Auto Regulated at -67dBm Cable Loss -5 dB Line Loss from Repeater to Tx Antenna GPS Transmit Power -74 dBm L2-Band XMT Antenna RF Input Power Repeater Antenna Gain 1.5 dB Antcom 3G1215P-XN-4 Ptmax -72.5 Path Loss @ 48.3m -68.3 dB Path Loss = 20 Log F (MHz) + 20 Log d (m) - 27.55 EIRP @ 48.3m from Bldg -140.8 dBm/24 MHz 1277.6 MHz Frequency L2 30 m Outside Bldg 18.3 m Antenna to Bldg Walls 48.3 m Total Distance PR (EIRP) = Ptmax - 20log f -20log (30 +d) +27.55 = -71.6 - 63.95 - 33.68 + 27.55 = -142.6 dBm/24 MHz


Document Created: 2016-12-01 11:59:55
Document Modified: 2016-12-01 11:59:55
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