Spirent GSS7725 Page 38 User Manual Download

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DGP01448AAA

6-00

A-4
Terms & Abbreviations

GSS7725 Interference Generator User Manual

Acronym

Description

NSC

Non-standard C/A-code

NSY

Non-standard Y-code

Personal Computer

P code

Precise Code

PDOP

Position Dilution Of Precision

PLTS

Position Location Test System

PPS

Precise Positioning Service

PPSSM

PPS Security Module

PRN

Pseudo Random Noise

PRS

Public Regulated Service

PRSN

Public Regulated Service Noise

RCVR

Receiver

RINEX

Receiver Independent Exchange Format

Remote Terminal

S/A

Selective Availability

SAAS

Selective Availability and Anti-Spoofing

SBAS

Satellite Based Augmentation System (such as WAAS, EGNOS, and

MSAS)

SPS

Standard Positioning Service

SSS

Satellite Signal Source

SVID

Satellite ID number

TDOP

Time Dilution Of Precision

TLM

Telemetry Word

TFOM

Time Figure Of Merit

TTFF

Time To First Fix

TOW

Time Of Week

User Equipment

UERE

User Equivalent Range Error

Universal Time

UTC

Universal Time Coordinated

VDOP

Vertical Dilution Of Precision

VDB

VHF Data Broadcast

WAAS

Wide Area Augmentation System

WGS84

World Geodetic System, 1984

Y code

Precise Code, A-S mode

1 PPS

1 Pulse Per Second

Summary of Contents for GSS7725

Page 1: ...DGP01448AAA Issue 6 00 August 2017 Document status APPROVED GSS7725 INTERFERENCE GENERATOR USER MANUAL...

Page 2: ...RISED IN WRITING BY SPIRENT COMMUNICATIONS PLC THE HOLDER OF THIS DOCUMENT SHALL KEEP ALL INFORMATION CONTAINED HEREIN CONFIDENTIAL AND SHALL PROTECT SAME IN WHOLE OR IN PART FROM DISCLOSURE AND DISSE...

Page 3: ...sequence 4 3 4 8 Firewall Rules 4 3 CHAPTER 5 SCENARIO DEFINITION 5 1 5 1 Signal types 5 1 5 2 Use File 5 2 Interference Simulation File editor 5 3 Using the Interference Simulation File editor 5 4 5...

Page 4: ...S7725 Interference Generator User Manual Spirent Communications plc 2002 2017 A 2 Abbreviations and acronyms A 2 SPIRENT CUSTOMER SUPPORT B 1 INDEX AND LIST OF FIGURES AND TABLES C 1 INDEX C 1 LIST OF...

Page 5: ...t may use the following trademarks or registered trademarks Microsoft and Windows trademarks or registered trademarks of Microsoft Corporation InstallShield a registered trademark of InstallShield Sof...

Page 6: ...R IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE 1 4 Document format Table...

Page 7: ...signal level control 20 dB GNSS signal level accuracy 1 0 dB RSS I S ratio relative to nominal GPS C A signal level 0 to 110 dB Interference level expressed as absolute power1 130 to 20 dBm Interferen...

Page 8: ...ent Table 2 3 GSS7725 Environmental Safety parameters Property Description Temperature range 15 C to 40 C The equipment employs forced air cooling Relative Humidity 75 max Mechanical Not exposed to vi...

Page 9: ...t state with an update rate of 2 Hz default 0 dB Controller to PosApp IP Address 192 168 5 30 default PCIe card Controller to GSS7725 IP addresses 192 168 10 1 default motherboard 2 5 Test Waveforms F...

Page 10: ......

Page 11: ...nd this document refer to various components using the Spirent nomenclature defined below SimGEN simulates one or more Vehicles each Vehicle may have one or more Antennas mounted on it Each Antenna co...

Page 12: ......

Page 13: ...ort found on the back of the GSS7725 4 2 Connectivity The following sections show the interconnect diagrams for simple configurations of the GSS7725 with the Spirent GSS signal generators Each diagram...

Page 14: ...tor User Manual Spirent Communications plc 2002 2017 4 4 GSS6700 4 5 GSS7000 Figure 2 GSS6700 GSS7725 Hardware Connectivity Figure 3 GSS7000 GSS7725 Hardware Connectivity GSS7725 Controller GSS6700 Co...

Page 15: ...cripts are running If this error is seen check the Ethernet connections and if necessary re power the GSS7725 controller If the error is still seen you will need to power cycle the Spirent GSS signal...

Page 16: ......

Page 17: ...After you have clicked OK you may see the message Incompatible h w appearing in the bottom right hand corner of the SimGEN window The most likely cause for this error message is that the requested ha...

Page 18: ...o SimGEN defaults to using this interference file Interference files use the extension itf In the Scenario contents window under each antenna highlight Interference file see Figure 6 which shows the d...

Page 19: ...dit the interference characteristics for all Interference channels associated with a given antenna After selecting an existing file or opening a new file you can then open the Interference Simulation...

Page 20: ...edit an existing file the editor selects the first action The file editor is identical to the list editor in SimGEN see reference a 5 3 Interactive mode You can interactively control an interference s...

Page 21: ...t enter the Action time in days and hh mm ss All GSS7725 commands persist until countermanded by another command in the same category Click on File Save as to save the Interference Simulation File Typ...

Page 22: ...nd prevents entry of Level and Reference Level after clicking Deselected SimGEN allows entry of any value of Level Reference Level as determined by the total ranges of Level and Reference Level Notes...

Page 23: ...he GSS7725 controller software is running upon i e dedicated Ethernet with no other traffic number and clock speed of CPU cores SSD vs HDD Reference clock The internal reference clock has a frequency...

Page 24: ...erer Level Action time Set the days and time into the scenario you want to apply the Command type Vehicle Antenna Vehicle number for the command default 1 Antenna number for the command default 1 Chan...

Page 25: ...nterfere Delta level Action time Set the days and time into the scenario you want to apply the Command type Vehicle Antenna Vehicle number for the command default 1 Antenna number for the command defa...

Page 26: ...Command Description timestamp Custom Waveform 7725 vehicle antenna channel reference_level level check_level file_name centre_frequency_hz sample_frequency_mhz target_frequency_mhz clock_type endianne...

Page 27: ...played IQ data Where timestamp time in to run specified by d hh mm ss vehicle integer starting at 1 antenna integer starting at 1 channel integer starting at 1 reference_level integer in dB i e 130 le...

Page 28: ...e current RF IQ file being played An example would be 1 00 10 00 RF on off 1 1 1 off This would issue a command at 1 day and 10 minute in to the scenario run for vehicle 1 antenna 1 channel 1 and woul...

Page 29: ...ude default calibration_samples_power Samples power of the calibration signal average I 2 Q 2 default 536870912 calibration_table_fname Calibration table filename csv vertical table default Calibratio...

Page 30: ...ocess due to the conversion from the file sample rate to the required output sample rate The command STATus can be used to retrieve the current state of the controller A return results of PROCESSING m...

Page 31: ...ation only 25000000 25 MS s FILe ENDianess value Sets the endianness of the input file Where value is one of 0 Big 1 Little Default 0 FILe FILEpath path str Sets the IQ file path Where path str is a s...

Page 32: ......

Page 33: ...SS7725 controller PC with Ethernet GSS7725 controller GSS7725 controller Keyboard mouse and monitor Connected to GSS7725 controller PC Power supply Power brick that comes with GSS7725 Ethernet cable E...

Page 34: ...a while to run eventually it will finish without error and produce a file within the etc directory called CalibrationTable_UsrpEthAtt csv This file can be loaded in to Excel and the line plotted It w...

Page 35: ...See UUT Host Computer A computer that controls the Spirent signal generator It prepares data to drive the signal generator analyses the results of the simulation and performs related housekeeping and...

Page 36: ...mming AOC Auxiliary Output Chip AODA Age Of Data Almanac A S Anti Spoofing ASCII American Standard Code for Information Interchange BCD Binary Coded Decimal BITE Built In Test Equipment bps Bits per s...

Page 37: ...requency ILS Instrument Landing System INS Inertial Navigation System IODC Issue of Data Clock IODE Issue of Data Ephemeris ISC Inter Signal Correction JPO Joint Program Office J S Jamming to Signal R...

Page 38: ...er Independent Exchange Format RT Remote Terminal S A Selective Availability SAAS Selective Availability and Anti Spoofing SBAS Satellite Based Augmentation System such as WAAS EGNOS and MSAS SPS Stan...

Page 39: ...tware or documentation Spirent s fault reporting system will ensure Global Services can quickly return your simulator to normal working operation After contacting Spirent Global Services to report a f...

Page 40: ...an Jose California 95134 USA Tel 1 800 SPIRENT E mail support spirent com Asia Pacific All Positioning Customers Spirent Communications Shining Tower No 35 Xueyuan Road Room 1302 Beijing 100083 China...

Page 41: ...y 2 1 FRPA A 3 FRPAGP A 3 G Galileo A 2 A 3 GDOP A 3 Gi t A 3 GLONASS A 2 GMT A 3 GNSS signal level 2 1 GNSS signal level accuracy 2 1 GNSS signal level control 2 1 GPS 3 1 5 6 5 9 A 2 A 3 GUI A 3 H H...

Page 42: ...4 PLTS A 4 PPS A 4 PPSSM A 4 PRN A 2 A 4 PRS A 2 A 4 PRS Noise A 4 R RCVR A 4 RINEX A 4 RT A 4 Run Time A 1 S S A A 4 SAAS A 4 SBAS A 4 Scenario 3 1 5 2 5 3 5 4 A 1 Signal Level 5 8 5 9 SPS A 4 SSG 3...

Page 43: ...vity 4 3 Figure 5 Antenna Signal Types dialog 5 1 Figure 6 Scenario tree 5 2 Figure 7 Select File dialog 5 3 Figure 8 Interference Simulation File editor 5 3 Figure 9 Interference Window 5 4 Figure 10...

Page 44: ...ameters 2 2 Table 2 4 GSS7725 Operating parameters 2 2 Table 2 5 GSS7725 Default Waveform Definitions 2 3 Table 5 1 Mode of operation with a user action file and an interference file 5 9 Table 5 2 GSS...

Page 45: ...tions plc can give no warranty or undertaking and make no representation as to their accuracy In particular Spirent Communications plc hereby expressly excludes liability for any form of consequential...

Page 46: ...of this document or any methods or techniques available therefrom must not be disclosed to any other person whatsoever SPIRENT COMMUNICATIONS PLC CONFIDENTIAL The information contained in this documen...

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