Novatel 15a, 15aT 6.3.5 RANGE Satellite Range Information

82 EuroPak-15a Receiver User Manual Rev 5

Chapter 6 Data Logs

6.3.5 RANGE Satellite Range Information

RANGE contains the channel measurements for the currently tracked satellites. When using this log, please

keep in mind the constraints noted along with the description.

It is important to ensure that the receiver clock model is valid. This can be monitored by the bits in the Receiver

Status field of the log header. Large jumps in pseudorange as well as accumulated Doppler range (ADR) will

occur as the clock is being adjusted. If the ADR measurement is being used in precise phase processing, it is

important not to use the ADR if the parity known flag in the ch-tr-status field is not set as there may exist a half

(1/2) cycle ambiguity on the measurement. The tracking error estimate of the pseudorange and carrier phase

(ADR) is the thermal noise of the receiver tracking loops only. It does not account for possible multipath errors

or atmospheric delays.

If a PRN is being tracked on more than one signal (GPS L1, GPS L5, Galileo L1 or Galileo E5a) multiple

entries with the same PRN will appear in the range logs. As shown in Table40 on Page 84, these entries can be

differentiated by bits 21-22 of the ch-tr-status field, which denote whether the observation is for GPS L1, GPS

L5, Galileo L1 or Galileo E5a. This is to aid in parsing data.

Log Type: Synch Message ID: 43

Field Field

Name Description Format Binary

Bytes Binary

Offset

1header This field contains the message header, in ASCII or Binary format. See

Section 4.3 on Page 35.H 0

2# obs Number of data sets to follow. Long 4 H

3PRN Satellite PRN number of range measurement. UShort 2H+4

4Reserved UShort 2H+6

5psr Pseudorange measurement (m). Double 8 H+8

6psr std Pseudorange measurement standard deviation (m). Float 4H+16

7adr Carrier phase, in cycles (accumulated Doppler range). Double 8 H+20

8adr std Estimated carrier phase standard deviation (cycles). Float 4H+28

9 dopp Instantaneous carrier Doppler frequency (Hz). Float 4H+32

10 C/N0Carrier to noise density ratio

C/N0 = 10[log10(S/N0)] (dB-Hz) Float 4H+36

11 locktime Number of seconds of continuous tracking (no cycle

slipping). Float 4H+40

12 ch-tr-

status Tracking status. See Table40 on Page 84.ULong 4H+44

13... Next data set, offset = H + 4 + (# previous obs x 44)

variable 32-bit CRC (ASCII and Binary only) Hex 4H+4+

(#obs x

44)

Contents

Main EuroPak-15a Receiver User Manual Table of Contents 2 Installation 23 3 Operation 28 4 Using Commands and Logs 31 5 Commands 43 6 Data Logs 70 Appendices Figures Tabl es Page Notices FCC NOTICE CE NOTICE Electromagnetic Compatibility (EMC) Software License Page Warranty Policy Customer Service Contact Information Firmware Updates Foreword Scope Prerequisites Conventions Compliance with GPS Week Rollover Chapter 1 Introduction 1.1 Overview of the EuroPak-15a 1.2 SBAS Overview 1.3 Galileo Overview 1.3.1 Open Service 1.3.2 Commercial Service 1.3.3 Safety-of-Life Service 1.3.4 Public Regulated Service 1.3.5 Search and Rescue Service 1.4 EuroPak-15a Enclosure 1.5 EuroPak-15a Features 1.5.1 GEO Signal Processing 1.5.2 Digital Pulse Blanking 1.6 Functional Overview 1.7 Internal Euro-L1E5a Card 1.7.1 Radio Frequency Section 1.7.2 Digital Electronics Section 1.8 Antenna or Signal Generator 1.9 Principal Power Supply 1.10 Data Communications Equipment Chapter 2 Installation 2.1 Additional Equipment Required 2.1.1 Selecting an Antenna or Signal Generator 2.1.2 Choosing a Coaxial Cable 2.1.3 Power Supply Requirements 2.2 Installation Overview Page 2.2.3 Applying Power to the Receiver 2.2.4 Connecting Data Communications Equipment 2.3 Additional Features and Information 2.3.1 Strobes 2.3.2 Status Indicators 2.3.3 External Oscillator 2.3.4 Mounting Bracket Chapter 3 Operation 3.1 Pre-Start Check List 3.2 Start-Up 3.3 Communicating with the EuroPak-15a 3.4 Getting Started 3.4.1 Starting the Receiver 3.4.2 Communicating with the Receiver Using GPSolution (Aviation) Page Chapter 4 Using Commands and Logs 4.1 Entering Commands 4.1.1 Command Settings on Power-Up 4.1.2 Determining the Current Command Settings 4.1.3 Response Formats 4.1.4 Response Messages Page 4.2 Logging Data 4.2.1 Log Types 4.2.2 Log Triggers 4.2.3 Specifying Log Formats 4.3 Log Formats 4.3.1 ASCII 4.3.2 Binary Page 4.4 Fields 4.4.1 Field Types 4.4.2 Commonly-Used Fields Page Page 42 EuroPak-15a Receiver User Manual Rev 5 Chapter 4 Using Commands and Logs Chapter 5 Commands 5.1 Functional Listing of Commands 5.2 Command Summary 5.3 Command Reference 5.3.1 AGCMODE Control Automatic Gain Control Page 5.3.2 ASSIGN Assign Individual Satellite Channels Page 5.3.3 CHANCONFIG 5.3.4 CLOCKADJUST 5.3.5 COM Serial Port Configuration Control Page 5.3.6 ECUTOFF Set Satellite Elevation Cut-off 5.3.7 EXTERNALCLOCK Syf() h2 f ------- h f ------- h0h1fh ++++= Page 5.3.8 FIX Constrain to Fixed Position Commands Chapter 5 * * EuroPak-15a Receiver User Manual Rev 5 57 Figure 4: The WGS84 ECEF Coordinate System 5.3.9 FRESET Clear Data in NVM 5.3.10 LOG Request Logs from Receiver Page 5.3.11 POSITIONTYPE Set the Position Solution 5.3.12 PULSEBLANKING Enable/Disable Pulse Blanking 5.3.13 RESET Hardware Reset 5.3.14 SDLLBW Configure DLL Filter Bandwidth 5.3.15 SPLLBW Configure Phase-Lock-Loop Bandwidth = 4 filter constant 5.3.16 STHRESHOLD Control Signal Thresholds 5.3.17 UNASSIGN Unassign a Previously Assigned Channel 5.3.18 UNLOG Remove Log from Logging Control 5.3.19 UNLOGALL Remove All Logs from Logging Control 70 EuroPak-15a Receiver User Manual Rev 5 Chapter 6 Data Logs 6.1 Functional Listing of Logs 6.2 Log Summary 6.3 Log Reference 6.3.1 AGCSTATS Automatic Gain Control Status EuroPak-15a Receiver User Manual Rev 5 73 Table 35: AGC Status Word Page EuroPak-15a Receiver User Manual Rev 5 75 6.3.2 ALMANAC Decoded Almanac Page 6.3.3 CLOCKMODEL Current Clock Model Status 78 EuroPak-15a Receiver User Manual Rev 5 Log Type: Synch Message ID: 16 Page 80 EuroPak-15a Receiver User Manual Rev 5 6.3.4 PSRPOS Pseudorange Position Page 6.3.5 RANGE Satellite Range Information Page 84 EuroPak-15a Receiver User Manual Rev 5 Table 40: Channel Tracking Status EuroPak-15a Receiver User Manual Rev 5 85 Table 41: Tracking State Bit Values Table 42: Correlator Spacing Bit Values 6.3.6 RAWEPHEM Raw Ephemeris 6.3.7 RAWFRAME Raw Subframes 6.3.8 RXCOMMANDS Receiver Configuration Page Page 6.3.9 RXSECSTATUS Receiver Section Status 92 EuroPak-15a Receiver User Manual Rev 5 Table 45: Receiver Error EuroPak-15a Receiver User Manual Rev 5 93 Table 46: Receiver Status 6.3.10 SATVIS Satellite Visibility Page 6.3.11 SYSTEMLEVELS System Hardware Levels 6.3.12 TIME Time Data 98 EuroPak-15a Receiver User Manual Rev 5 6.3.13 TRACKSTAT Tracking Status Page 6.3.14 VERSION Version Information EuroPak-15a Receiver User Manual Rev 5 101 Table 50: Version Log Field Formats Chapter 7 Firmware Updates 7.1 Contacting the NovAtel Aviation Department 7.2 Downloading the Files 7.3 Decompressing the Files 7.4 Running the Utility 7.4.1 Open a File to Download 7.4.2 Communications Settings 7.4.3 Downloading Firmware Page Chapter 8 Built-In Status Test 8.1 Overview 8.2 Receiver Status Word 8.3 Error Strobe Signal 8.4 Receiver Status Log 8.4.2 Error Word 0 0 C C 0 0 0 0 0000 0000 1100 1100 0000 0000 0000 0000 Bit 0 Bit 31 0 0 0 0 0 0 0 0 0000 0000 0000 0000 0000 0000 0000 0000 Bit 0 Bit 15 Page 110 EuroPak-15a Receiver User Manual Rev 5 Appendix A Technical Specifications Table 52: Performance Specifications PERFORMANCE All values subject to GPS system characteristics A.1 EuroPak-15a and EuroPak-15aT Enclosures 112 EuroPak-15a Receiver User Manual Rev 5 INPUT/OUTPUT DATA INTERFACE INPUT/OUTPUT STROBES Technical Specifications Appendix A EuroPak-15a Receiver User Manual Rev 5 113 INPUT/OUTPUT CONNECTORS ENVIRONMENTAL A.1.1 Port Pin-Outs A.1.2 Cables Page Page Page Page 120 EuroPak-15a Receiver User Manual Rev 5 A.2 Channel Assignments Table 56: 16GPSL1L5 Channel Configuration Technical Specifications Appendix A EuroPak-15a Receiver User Manual Rev 5 121 Table 57: 16GALILEOL1E5a Channel Configuration Table 58: 12GPS4GEOL1L5 Channel Configuration 122 EuroPak-15a Receiver User Manual Rev 5 Table 59: 8GPS8GEO Channel Configuration Table 60: 16GPSL5 Channel Configuration Appendix B Electrostatic Discharge Control (ESD) Practices B.1 Overview B.2 Handling ESD-Sensitive Devices B.3 Prime Static Accumulators B.4 Handling Printed Circuit Boards Appendix C Standards/References Appendix D Replacement Parts D.1 EuroPak-15a D.2 Accessories D.3 Manufacturers Part Numbers Index