Updated L1 and L2 Calculations

0447-EX-ST-2015 Text Documents

General Motors Research Corporation

2015-04-27ELS_161638

L1 Calculation
Label Parameter Value Units Notes / Formula
A Transmit ERP 24 pW

B Frequency 1575.42 MHz L1 center frequency
C Distance 100 feet Required distance
D Distance 30.5 meters = C / 3.2808 feet/meter
E Free Space Path Loss 66.1 dB = 20 * log(B) + 20 * log(D) - 27.55

F Transmit ERP -76.2 dBm = 10 * log(A / 1,000,000,000)
G Transmit EIRP -74.0 dBm = F + 2.15

H Received Power -140.1 dBm =G-E

L2 Calculation
Label Parameter Value Units Notes / Formula
A Transmit ERP 15 pW

B Frequency 1227.60 MHz L2 center frequency
C Distance 100 feet Required distance
D Distance 30.5 meters = C / 3.2808
E Free Space Path Loss 63.9 dB = 20 * log(B) + 20 * log(D) - 27.55

F Transmit ERP -78.2 dBm = 10 * log(A / 1,000,000,000)
G Transmit EIRP -76.1 dBm = F + 2.15

H Received Power -140.0 dBm =G-E

Document Created: 2015-04-27 11:29:16
Document Modified: 2015-04-27 11:29:16

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