Request for Additional Test Locations

0260-EX-CM-2018 Text Documents

Southwest Research Institute

2018-11-29ELS_220411

Southwest Research Institute Application for Modification of License File No. 0260-EX-CM-2018 REQUEST FOR ADDITIONAL TEST LOCATIONS Pursuant to Section 5.3 (f), Section 5.51 and Section 5.53 of the Federal Communications Commission (“FCC”) rules, 47 C.F.R. §§ 5.3 (f), 5.51, 5.53 (2017), Southwest Research Institute (“SwRI”) respectfully requests a modification of its experimental license issued under call sign WF2XCH, 0223-EX-CR-2017, to operate from additional locations at its campus for purposes of testing the performance, functionality and safety of autonomous vehicle technology prior to any real-world application in an indoor laboratory environment. In support of SwRI’s request, which is in compliance with NTIA Manual Paragraph 8.3.28, the following is shown: 1) Applicant’s Address, Background and FRN: Southwest Research Institute is headquartered at 6220 Culebra Road, San Antonio, TX 78238-5166. It is an independent, not-for-profit, applied engineering and development organization devoted to technology research, design and development. It conducts business with the industry and government entities (in the U.S. and other friendly nations) on a worldwide basis. Approximately 50% of the SwRI’s business is for the U.S. Government. Its FCC Registration Number (“FRN”) is 0004074217. 2) Background and Need for License Modification: SwRI is a leader in the field of intelligent vehicles and autonomous vehicle technology for both commercial and United States military applications. It is continuously engaged in product development, testing and refinement of its autonomous vehicle systems and technology, including the testing and debugging of developed technology, and GPS signals constitute a fundamental component of that technology. SwRI product development and refinement efforts require substantial testing of applicable technologies utilizing GPS signals in a laboratory environment. Under the proposed modification to its current license, SwRI will transmit GPS signal input to SwRI hardware while indoors and wholly within the SwRI laboratory facilities. The transmission of GPS input is necessary to accurately test the performance, functionality and safety of autonomous vehicle technology prior to any real-world applications and to refine and debug existing technology. A modification of its license is needed so that it may transmit GPS signals at additional test locations so that it may conduct safe and secure testing and development of autonomous vehicle technologies at its indoor facilities as identified below to obtain real-world data and test and improve its autonomous vehicle technologies. 1

3) Location of Additional Sites: The proposed tests will be conducted on the campus of Southwest Research Institute, 6220 Culebra Road, San Antonio (Bexar County), Texas. The campus is comprised of approximately 1200 acres, an area entirely under the control of SwRI. Specifically, the proposed tests will be conducted within Buildings 290 and 290A, which are close to other buildings where SwRI is already authorized to conduct related indoor GPS operations under its existing license, issued under call sign WF2XCH. The coordinates of the two sites are NL 29-26-31.0; WL -98-36-04.8 (Building 290) and NL 29-26-30.0; WL -98-36-06.4 (Building 290A), which are approximately 53 meters from each other. 4) FCC Station Codes: The FCC radio service code and station class code for the proposed operation are “XT” and “FX,” respectively. 5) Equipment To Be Used: SwRI proposes to operate a single transmitter capable of operating on the channels listed in Section 6. Specifically, it proposes to deploy a transmitter (Model L1/L2GHNRRKIT) manufactured by GPS Networking. The technical specifications of the equipment are provided under Attachment A. 6) Frequencies Desired: As stated in Section 2 above, SwRI seeks to obtain real-world data samples of the characteristics of GPS transmissions. Thus, it is critical for SwRI to conduct tests centered on GPS channels 1227.6 MHz and 1575.42 MHz. SwRI recognizes that the use of certain frequencies will require coordination through the Interdepartment Radio Advisory Committee (“IRAC”), and it is amendable to coordinating with Federal government personnel prior to commencing any transmissions. 7) Power Level: SwRI will operate with the minimum necessary power to conduct its tests, and in no event will that level exceed the levels set out in the table provided under Attachment B. Specifically, the maximum equivalent isotropically radiated power (“EIRP”) will be such that the calculated emissions are no greater than -140 dBm/24 MHz as received by an isotropic antenna at a distance of 100 feet (30 meters) from where the tests are being conducted. A link budget showing compliance with this requirement is provided in the table under Attachment B and is based on free space propagation with no allowance for additional attenuation (e.g., building attenuation). 2

8) Type of Emission, Modulation Technique, and Bandwidth Required: The primary emission designator for the proposed operations is 2M46G3D, as indicated on the accompanying FCC Form. Other emission modes and modulation techniques may be utilized, but in no event will the emissions extend beyond the limits associated with the above-referenced emission. SwRI does not propose to supply station identification as set forth in Section 5.115 of the Commission's Rules, 47 C.F.R. § 5.115 (2017), 9) Antenna Information and Compliance with Human Exposure Limits: SwRI will comply with all Federal Aviation Administration (“FAA”) and FCC rules and regulations regarding the installation and operation of antennas and their support structures. The antenna to be deployed under the authority requested will not extend more than six meters more than six meters above the building. 10) Restrictions on Operation: GPS users in the area of potential interference to GPS reception will be notified that GPS information may be impacted during testing. In addition, it will post signs on doors to the test area notifying that, "GPS re-radiator is in use and the GPS information you receive may be in error." SwRI also understands that: (a) permission to operate has been granted under experimental authority issued by the Federal Communications Commission, is strictly temporary, and may be cancelled at any time and that (b) operation is subject to the condition that it not cause harmful interference. Moreover, SwRI does not propose to market, sell, or lease unapproved equipment to end users or conduct a market study in conjunction with these tests. After the completion of the tests, SwRI will recover all devices that do not comply with FCC regulations. 11) Interference Protection/Stop Buzzer Contact Information: As noted above, GPS users in the area of potential interference to GPS reception will be notified that GPS information may be impacted during testing. It also understands that it may be required to discontinue its operations immediately, if any interference occurs. SwRI does not expect interference to occur, however, as its tests will be conducted only on a limited basis and only periodically during the term of its experimental license. Moreover, SwRI personnel will be monitoring the RF spectrum and will take steps to minimize any potential for interference. In that regard, SwRI advises the Commission that Christopher Mentzer is the technical contact overseeing these tests. He will be personally responsible for the operations and will serve as the “stop buzzer” in the event that operations must be terminated because of any interference concerns. Mr. Mentzer can be reached at (210) 522-4240, email christopher.menzer@swri.org 3

12) Application Contact Information: Company Contact: “Stop Buzzer” Contact: Monica R. Trollinger Christopher I. Mentzer General Counsel Intelligent Systems 6220 Culebra Road Div. 10, Building 51 San Antonio, TX 78238-5166 PO Drawer 28510 Telephone: (210) 522-6024 6220 Culebra Road Facsimile: (210) 522-5839 San Antonio, TX 78228-0510 mtrollinger@swri.org Telephone: (210) 522-4240 christopher.mentzer@swri.org Legal Contacts: David E. Hilliard Kurt E. DeSoto Wiley Rein LLP 1776 K Street, N.W. Washington, DC 20006 Telephone: (202) 719-7000 Facsimile: (202) 719-7207 Email: dhilliard@wileyrein.com Email: kdesoto@wileyrein.com 4

ATTACHMENT A Equipment Specifications 5

L1/L2GHNRRKIT L1/L2 GNSS Hangar Networked Re-Radiating Kit Technical Product Data Features • Amplified L1/L2 GNSS Roof Antenna Gain ≥ 33dB • Re-Radiating Amplifier with Power Supply Typical Gain 30dB • Optional Mounting Kit Hardware Roof Antenna Mount & Adjustable Re-Radiating Mount • Variable Gain Option Re-Radiating Amp Gain Varies from approx 0-23 dB gain • Variable Gain Option with LCD Display Push Button Control in 1dB Increments 0-30dB gain Description The GPS L1/L2 GNSS Hanger Re-Radiating Kit (L1/L2GHNRRKIT) is a complete re- radiating system that allows re-radiation of the GPS L1/L2 signal as well as the other GNSS frequencies (including Galileo, GLONASS, Beidou and Omnistar indoors). The L1/L2GHNRRKIT consists of an active L1/L2 GNSS roof antenna, a re-radiating amplifier with a wall mount plug-in transformer that powers the entire system, and a passive L1/L2 GNSS re-radiating antenna. The GNSS signals from the roof antenna are amplified and radiated indoors. Thus, if a receiver has line of sight with the re-radiating antenna, it can receive the GNSS signal indoors up to 100 feet. A cable from the roof antenna to the re-radiating kit is required and can be purchased separately. REV. A 11/11/15 1

Roof Antenna Specifications, TA = 250C Parameter Conditions Min Typ Max Units Frequency See Active Antenna Specifications page 5 GHz Bandwidth MHz Out Imped. (1) 50 Ω Pre-Amp Gain 30 33 dB Noise Figure 2.0 dB Output SWR 2.0:1 - Filtering See Active Antenna Specifications page 5 dB dB Req. DC Input V. 4.5 24 Vdc Current 22 mA RF Connector Options Connector Options CONNECTOR STYLE CHARGE Type N-female NC 0 Re-Radiating Amplifier Electrical Specifications, TA = 25 C Parameter Conditions Min Typ Max Units Freq. Range Ant – J1 1.1 1.7 GHz In/Out Imped. Ant, J1 50 Ω Gain (1) dB 29 30 31 dB Input SWR (2) J1 - 50Ω 1.8:1 - Output SWR Ant - 50Ω 1.8:1 - Noise Figure Ant – J1 3.3 3.5 dB Current 33 40 mA Gain Flatness | L1 – L2 | ; Ant – J1 0.5 1 dB Reverse Isolation J1 – Ant 35 dB Group delay τd,max - τd,min : Ant – J1 1 ns Flatness Re-Radiating Amp System Power Supply Options Source Voltage Options VOLTAGE INPUT STYLE 110VAC Transformer (Wall Mount) 220 VAC Transformer (Wall Mount) 240 VAC (United Kingdom) Transformer (Wall Mount) Customer Supplied DC 9-32 VDC Military Style Connector Re-Radiating Amp Gain Control Options Standard Gain 30 dB (Custom Gain between 0-30dB available upon request) Variable Gain -3 ≤ Gain ≤ 23dB Variable Gain with LCD Display 0-30dB gain range with push button control in 1dB increments 0 Re-Radiating Antenna Electrical Specifications, TA = 25 C Parameter Conditions Min Typ Max Units Frequency See Passive Antenna Specifications page 6 GHz Bandwidth MHz Impedance 50 Ω Peak Gain 3 dBic Output SWR 1.5:1 - Polarization RHCP - REV. A 11/11/15 2

Part Number Configuration HS E W VG L1L2GHNRRKIT N / 5 / 110 Options: HS = Hermetically Sealed E = EMI Shielding W = Weatherproofing Re-Radiating Kit Type: VG = Variable Gain knob control 0-23dB gain VGLCD = Variable Gain with push button control in 1dB increments 0-30dB gain L1L2GHNRRKIT = L1/L2 GNSS Hangar Networked Re-Radiating Kit Connector Options (Type N-female Standard): N = N-type, S = SMA, T = TNC, B = BNC DC Output Voltage 5 = Amplifier Output Voltage (included antenna requires 4 - 24vdc--5vdc is default voltage) Source Voltage (Power Supply Options) 110=110VAC, 220=220VAC (2 prong Euro), 240=240 (3 prong UK) MC = Military DC Connector (User Supplies 9-32VDC) (Military DC Mating Connector is included standard with the MC power option) Contact GPS Networking Technical Support at 719-595-9880 or salestech@gpsnetworking.com for any questions regarding non-standard configurations and corresponding part numbers) REV. A 11/11/15 3

. —~_..._..._._NGC@: nectors): »1: Transmission Log Mag 10.0 cB— fRef 0.00 dB 4B Moasi: Miri_15/5.000 MHz 4 0.0210B 10 ~10 —20 —3 Start 1 000.000 MHz Stop 1 800.000 MHz P2: Reflection SWE 2.0 / Ref —9.000 gas?: Mfri 15/5.000 MHz 1.18 Start 1 000.000 MKz Stop i1 800.000 MHz : Mkr (MHz) dB 2: Mkr (MHz) 1> 1575.0000 30.021 1> 1575.0000 1.184 2: 1227.0000 29.057 22 1227.0000 1 .431

Specifications: L1L2GGPSA (L1/L2 GNSS Active Antenna-Outdoor) Includes all GNSS Frequencies SPECIFICATIONS ELECTRICAL: L5 GPS L2 GPS L2 GLONASS OmniSTAR / L-Band L1 GPS L1 GLONASS E5, E5a, E5b Galileo B2 Compass E6 Galileo L6 Galileo E1, E2 Galileo L5 IRNSS B3 Compass B1 Compass L1 IRNSS FREQUENCY: 1176.45 ± 12 MHz 1227.60 ± 12 MHz 1252.50 ± 7.5 MHz 1542.50 ± 14.0 MHz 1575.42 ± 15.0 MHz 1609 ± 7.0 MHz 1164.45 - 1219.14 MHz 1207.14 ± 10 MHz 1266.75 - 1290.75 MHz 1542.50 ± 5.0 MHz 1575.42 ± 17.0 MHz 1176.45 ± 15 MHz 1268.52 ± 10 MHz 1561.098 ± 10 MHz 1575.42 ± 12.0 MHz RADIATION PATTERN: HEMISPHERICAL POLARIZATION: RHCP RHCP RHCP RHCP RHCP RHCP VSWR: < 2.0:1 < 2.0:1 < 2.0:1 < 2.0:1 < 2.0:1 < 2.0:1 IMPEDANCE: 50 ohms 50 ohms 50 ohms 50 ohms 50 ohms 50 ohms ANTENNA GAIN (dBic): Free Space 4 ft G.P. Free Space 4 ft G.P. Free Space 4 ft G.P. Free Space 4 ft G.P. Free Space 4 ft G.P. Free Space 4 ft G.P. @ 90 ° (ZENITH): - - + 2.6 + 4.8 + 0.0 + 2.4 + 2.1 - 2.0 + 4.0 + 2.0 + 3.0 + 1.4 @ 10 ° Elevation: - - 0 - 3.5 - 3 - 6.5 - 6 - 4 - 5.1 - 2.7 - 2 - 3 - 3.4 @ 20 ° Elevation: - - - 2.0 - 0 - 4.7 - 3 - 3 - 1.9 - 1.7 + 0.4 - 2 - 0.5 4x5.5mm @ 30 ° Elevation: - - - 0.4 + 1.8 - 3.4 - 1 - 2 - 0.5 - 0.5 + 1.6 - 1 + 0.5 @ 60 - 90 ° Elevation: >-4 >-4 > 1.3 > 2.6 > -1.5 > - 0.1 > + 1.1 > - 0.5 > + 2.9 > + 1.6 > + 2.0 > -0.2 BEAM WIDTH (3dB): 110 Deg. 120 Deg. 110 Deg. 115 Deg. 105 Deg. 110 Deg. 95 Deg. 145 Deg. 95 Deg. 150 Deg. 95 Deg. 145 Deg. For M5 Screws AXIAL RATIO: 1.5 dB 2 dB 1 dB 1 dB 1 dB 2 dB 1 dB 2 dB 1 dB 1 dB 2 dB 3 dB LIGHTNING PROTECTION: DC GROUNDING LNA GAIN: 35 dB 35 dB 35 dB 33 dB 33 dB 33 dB LNA NOISE FIGURE: 3.0 dB 3.0 dB 3.0 dB 3.0 dB 3.0 dB 3.0 dB LNA P1dB Out: +13 dBm +13 dBm +13 dBm +13 dBm +13 dBm +13 dBm LNA DC POWER: 2.5V/20mA, 3V/29mA, 3.3V/35mA, (2.5-24)V/<50mA POWER HANDLING: 1 Watt CW, Optional: 10 Watts 1 Microsec Pulse (-AL-) MECHANICAL: SIZE: DIAMETER: 3.50 in. [ 88.90 mm] HEIGHT: 0.86 in. [21.89 mm] X, Y Phase Center =0.0 (Center of Antenna) WEIGHT: 9 oz. (256 g) Z Phase Center = FINISH: SKYDROL RESISTANT POLYURETHANE ENAMEL BASE IRIDITE PER MIL-C-5541F CLASS 1A COLOR: GLOSS WHITE #17925 PER FED-STD-595B MATERIAL: 6061-T6 ALUMINUM ALLOY BASE COMPOSITE RADOME, IMPACT, ABRASION, UV, SOLVENT, SKYDROL RESISTANCE, AND FIRE RETARDANT CONNECTOR: TNC FEMALE (OPTION: SMA, BNC, TNC Bulkhead, N, N Bulkhead, MCX, MMCX) ENVIRONMENTAL: TEMPERATURE: -67 °F TO +185 °F [-55 °C TO +85 °C] (Operational) -85 °F TO +302 °F [-65 °C TO +150 °C] (Storage) 4 x 10-32 UNC-2B ALTITUDE: 70,000 ft. 0.250" Deep VIBRATION: > 30 G's LEAKAGE: HERMETICALLY SEAL HAILSTONES: < 0.5" Dia. NAMEPLATE FEDERAL & MILITARY SPECIFICATIONS: DESIGN TO: FAA TSO-C144, DO-160D, D0-228, MIL-C-5541, MIL-E-5400, MIL-I-45208A, MIL-STD-810, AND SAE J1455 M5 Screws TNC P/N: G5Ant-3AT1 Connector Color SIZE: LNA: CABLE'S LENGTH: CONNECTOR: COLOR: 1: 2" SQ. 42: ARINC 743 A: WITH LNA X: NO CABLE S: SMA; B: BNC -1: GLOSS WHITE #17925 PER FED-STD-595B 1.9: 1.9" SQ. 52: 2.6" DIA. ON 5" GROUND PLANE P: WITHOUT LNA M: MCX; MM: MMCX -2: LUSTERLESS GRAY #36320 PER FED-STD-595B 2: 2.6" DIA. 72: 7" DIA. CHOKE RING N: N, NB: N-Bulkhead -3: OLIVE DRAB GREEN #34094 PER FED-STD-595B 3: 3.5" DIA. T: TNC, TB: TNC-Bulkhead -4: LUSTERLESS BLACK #37038 PER FED-STD-595B -5: TAN #: FS 23446 or 33446, FED-STD-595 REV. A 11/11/15 5

Specifications: L1L2GRRKPA-N (L1/L2 GNSS Passive retransmit antenna-indoor) Includes all GNSS Frequencies SPECIFICATIONS ELECTRICAL: L5 GPS L2 GPS L2 GLONASS OmniSTAR / L-Band L1 GPS L1 GLONASS E5, E5a, E5b, Galileo B2 Compass E6 Galileo L6 Galileo E1, E2 Galileo L5 IRNSS B3 Compass B1 Compass L1 IRNSS FREQUENCY: 1176.45 ± 12.0 MHz 1227.60 ± 12.0 MHz 1252.50 ± 7.5 MHz 1542.50 ± 14.0 MHz 1575.42 ± 15.0 MHz 1603 ± 7.0 MHz 1164.45 - 1219.14 MHz 1207.14 ± 10.0 MHz 1266.75 - 1290.75 MHz 1542.50 ± 5.0 MHz 1575.42 ± 17.0 MHz 1176.45 ± 15.0 MHz 1268.52 ± 10.0 MHz 1561.098 ± 10.0 MHz 1575.42 ± 12.0 MHz RADIATION PATTERN: HEMISPHERICAL POLARIZATION: RHCP RHCP RHCP RHCP RHCP RHCP VSWR: < 2.0:1 < 2.0:1 < 2.0:1 < 2.0:1 < 2.0:1 < 2.0:1 IMPEDANCE: 50 ohms 50 ohms 50 ohms 50 ohms 50 ohms 50 ohms ANTENNA GAIN (dBic): Free Space 5in G.P Free Space 5in G.P Free Space 5in G.P Free Space 5in G.P Free Space 5in G.P Free Space 5in G.P @ 90 ° (ZENITH): - 7 - 3 + 0.5 + 3 - 0.8 + 2.3 + 1.9 + 1.0 + 4.1 + 3.2 + 2.0 + 2.6 @ 10 ° Elevation: - 13 - 10 - 5.6 - 4.1 - 7.1 - 5.0 - 5.0 - 5.7 - 2.8 - 3.2 - 5.1 - 4.2 @ 20 ° Elevation: - 11 - 9 - 3.9 - 2.7 - 5.4 - 3.3 - 3.9 - 3.9 - 1.9 - 1.6 - 4.1 - 2.6 @ 30 ° Elevation: - 10 - 8 - 2.6 - 0.8 - 4.3 - 1.5 - 2.6 - 3.0 - 0.4 - 0.6 - 2.6 - 1.4 @ 60 - 90 ° Elevation: >-8 >-5 > -1 > 1.8 > - 2.4 > 1.2 > + 0.8 > + 0.2 > 2.9 > + 2.5 > + 0.8 > + 1.8 BEAM WIDTH (3dB): 105 Deg. 100 Deg. 105 Deg. 105 Deg. 90 Deg. 105 Deg. 95 Deg. 97 Deg. 95 Deg. 100 Deg. 95 Deg. 100 Deg. X, Y Phase Center = 0.0 AXIAL RATIO: 1.5 dB 3 dB 1 dB 1 dB 1 dB 1 dB 1 dB 1 dB 1 dB 1 dB 2 dB 2 dB (Center of Antenna) LIGHTNING PROTECTION: DC GROUNDING Z Phase Center = LNA GAIN: N/A N/A N/A N/A N/A N/A LNA NOISE FIGURE: 3.0 dB 3.0 dB 3.0 dB 3.0 dB 3.0 dB 3.0 dB LNA P1dB Out: +13 dBm +13 dBm +13 dBm +13 dBm +13 dBm +13 dBm LNA DC POWER: 2.5V/20mA, 3V/29mA, 3.3V/35mA, (2.5-24)V/<50mA POWER HANDLING: 1 Watt CW, Optional: 10 Watts 1 Microsec Pulse (-AL-) MECHANICAL: SIZE: DIAMETER: 2.63 in. [66.8 mm] HEIGHT: 0.985 in. [25 mm] WEIGHT: 5.5 oz. (156 g) FINISH: SKYDROL RESISTANT POLYURETHANE ENAMEL BASE IRIDITE PER MIL-C-5541F Class 1A MATERIAL: 6061-T6 ALUMINUM ALLOY BASE COMPOSITE RADOME, IMPACT, ABRASION, UV, SOLVENT, SKYDROL RESISTANCE, AND FIRE RETARDANT CONNECTOR: TNC FEMALE BULKHEAD CONNECTOR (OPTION: SMA, BNC, N, N Bulkhead, MCX, MMCX) ENVIRONMENTAL: TEMPERATURE: -67 °F TO +185 °F [-55 °C TO +85 °C] 70,000 ft. VIBRATION: > 30 G's HERMETICALLY SEAL FEDERAL & MILITARY SPECIFICATIONS: FAA TSO-C144, DO-160D, D0-228, MIL-C-5541, MIL-E-5400, MIL-I-45208A, MIL-STD-810, AND SAE J1455 ACCEPTANCE TEST PROCEDURE: ATP-GPS-L1L2-100 P/N: G5Ant-2PN4 SIZE: LNA: CABLE'S LENGTH: CONNECTOR: COLOR: 1: 2" SQ. A: WITH LNA X: NO CABLE S: SMA; B: BNC -1: GLOSS WHITE #17925 PER FED-STD-595B 1.9: 1.9" SQ. P: WITHOUT LNA M: MCX; MM: MMCX -2: LUSTERLESS GRAY #36320 PER FED-STD-595B 2: 2.6" DIA. N: N; NB: N-Bulkhead -3: OLIVE DRAB GREEN #34094 PER FED-STD-595B 3: 3.5" DIA. T: TNC; TB: TNC-Bulkhead -4: LUSTERLESS BLACK #37038 PER FED-STD-595B TNB: TNC-Bulkhead with -5: TAN #: FS 23446 or 33446, FED-STD-595 4: MINI ARINC N Connector Thread on Bulkhead REV. A 11/11/15 6

Mechanical Re-Radiating Kit Amplifier Dimensions: Height: 1.3” Length (not including connectors) Body: 2.5” Base Plate: 3.25” Width (not including connectors): 2.5” Weight: 11 oz. (316 grams) o o Operating Temp. Range: -40 to + 75 C Finish Housing and Base Plate: ELECTROLESS NICKEL PLATED MIL-C-26074C CLASS 1, .0001-.0003 MAX Finish Lid: ANODIZE, TYPE II, CLASS 2, BLACK, per MIL-A-8625 MC-Military DC connector (optional) REV. A 11/11/15 7

ATTACHMENT B Budget Link Calculations The following calculations represent the architecture of SwRI’s proposed GPS re-radiation configuration and the signal power calculations which demonstrates compliance with NTIA Manual 8.3.28. Individual element Cumulative total GPS signal received power from GPS spacecraft -130 -130 dBm Receive Antenna pattern gain (estimated) 3 -127 Receive Antenna amplifier gain (data sheet) 33 -94 Transmission line loss to re-radiator antenna (estimated) -27 -121 Re-radiator amplifier (data sheet) 30 -91 Re-radiator antenna gain (estimated) 3 -88 Free space path loss (FSPL) at 100 feet inside Building 178 -66 -154 dBm These calculations indicate that SwRI will not re-radiate GPS signals greater than -140dBm/24 MHz at 100 feet from the re-radiation source. 6


Document Created: 2018-11-29 10:06:09
Document Modified: 2018-11-29 10:06:09
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