Baron Services XDD-1000C C-BAND DOPPLER WEATHER RADAR User Manual Part 3

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Document Description	Users Manual Part 3
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Date Submitted	2003-10-14 00:00:00
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Document Title	Users Manual Part 3
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DRAFT
RVP8
Digital IF Receiver/Doppler Signal, Processor
”seflflfflfl 1 1001 001
0111001
. 1010011
u1110101
00349910010010
The designs and descriptions contained in this manual may not be copied, translated or
reproduced in any form without the prior written consent of SIGMEI,‘ Inc.
R VP8 Urer’s Manual
16 April 2003 Table of Contents
Table of Contents
Hardware Limited Warranty . . . . .
Preface........ ......
1. Introduction and Specifications . .
1.1 System Configuration Concepts .
1.1.1 IFD IF Digitizer ..........................
1.1.2 Digital Receiver PCI Card (RVP8/Rx) ...........
1.1.3 Digital Transmitter PCI Card (RVP8/Ix) .
1.1.4 I/0-62 PCI Card and I/O Panel ....................
1.2 Comparison of Analog vs Digital Radar Receivers .......
1.2.1 What is a Digital IF Receiver? ...........
1.2.2 Magnetron Receiver Example .....................
1.2.3 Klystron or TWT Receiver and Transmit RF Example . . .
1.3 RVP8 LF Signal Processing .............................
1.3.1 IFD Data Capture and Timing
1.3.2 Burst Pulse Analysis for Amplitude/Frequency/Phase ........
1.3.3 Rx Board and CPU IF to l/Q Processing ...........
1.4 RVP8 Weather Signal Processing ..............
1.4.1 General Processing features .......... .
1.4.2 RVP8 Pulse Pair Time Domain Processing . .
1.4.3 RVP8 DFT/FFT Processing ..............
1.4.4 Random Phase Processing for 2nd Trip Echo . .
1.4.5 Polarization Mode Processing ...............
1.4.6 Output Data ..................
1.5 RVP8 Control and Maintenance Features ............
1.5.1 Radar Control Functions ...................
1.5.2 Power-Up Setup Configuration . .
1.5.3 Built-In Diagnostics ..........................
1.6 Support Utilities and Available Application Soflware . . . .
1.7 Open Architecture and Published API ..............
1.8 RVP8 Technical Specifications ......
1.8.1 IFD Digitizer Module .....
1.8.2 RVP8/Rx PCI Card .........
1.8.3 RVP8/TX PCI Card .......
1.8.4 SIGMET I/O-62 PCI Card . . .
1.8.5 RVP8 Standard Connector Panel
1.8.6 RVP8 Processing Algorithms . . . ....................
1.8.7 RVP8 Input/Output Summary ................................
RVP8 User 3- Manual
16 April 2003 Table of Contents
1.8.8 Physical and Environmental Characteristics ...................... l—43
2. HardwareInstallation 2—1
2.1 Overview and Input Power Requirements . . ................. 2—1
2.2 IFD IF Digitizer Module Installation ..................... 2—2
2.2.1 IFD Introduction ......... . . . 2—2
2.2.2 IFD Revision History ....................................... 2—3
2.2.3 IFD Power, Size and Physical Mounting Considerations ............ 2—4
2.24 IFD I/O Summary ................................ . . . 2—5
2.2.5 IFD Adjustments and Test/Status Indicators . ...... 2—6
2.2.6 IFD Input A/D Saturation Levels ............... 2—8
2.2.7 IF Bandwidth and Dynamic Range . . . 2—9
2.2.8 IF Gain and System Performance . . . . 2—11
2.2.9 Choice of Intermediate Frequency ........ 2—13
2.2.10 IFD Analog AFC Output Voltage (Optional) . 2-14
2.2.11 IFD Reference Clock Input (Optional) ...... 2—15
2.2.12 Coax Uplink and Fiber Downlink .............. 2—17
2.3 RVP8 Chassis .................................... 2—18
2.3.1 RVP8 Chassis Overview .................... 2—18
2.3.2 Power Requirements, Size and Physical Mounting ........... 2—1 8
2.3.3 Main Chassis Direct Connections ......................... 2—19
2.3.4 Connector Panel I/O Connections . . . . . 2—20
2.3.5 Power-Up Details (Alan) Drafi . .. . ................... 2—23
2.3.6 Socket Interface .............................. 2—24
2.4 Digital AFC Module (DAFC) ........................ 2—27
2.4.1 Example Hookup to a CH “MVSR-xxx” STALO . . 2—29
2.4.2 Example Hookup to a MITEQ “MFS-xxx” STALO 2—31
2.5 RVP8 Custom Interfaces ............................ 2-32
2.5.1 Using the TED Coax Uplink ............. . . . . 2—32
2.5.2 Using the (LQ) Digital Data Stream (Alan) . . . ........ 2—35
3. TTYNonvolatileSetups(draft)............ 3—1
3.1 Overview of Setup Procedures ..... . . 3—1
3.1.1 Initial Entry and Help List .............................. 3—1
3.1.2 Factory, Saved, and Current Settings . ................... 3—2
3.1.3 Processor Reset Command ......... 3—3
3.1.4 V — View Internal Status ........................ 3—3
3.1.5 Burst-In / IF—In Swap Command ‘ ................... 3—5
32 Host Computer 1/0 Debugging ......... 3—7
3.21 Physical-Level I/O Examiner . . . . ................... 3~7
3.2.2 Application-Level I/O Examiner . . ................... 3—7
3.3 View/Modify Dialogs ...................... 3—10
3.3.1 Mc — Board Configuration .................................. 3-10
RVP8 User ‘5 Manual
16 April 2003 Ihble of Content:
M“—
3.3.2 Mp — Processing Options ................................... 3—13
3.3.3 Mf — Clutter Filters ........ . 3—16
3.3.4 Mt — General Trigger Setups ..................... 3—18
3.3.5 Mt — Triggers for Pulsewidth #n .............. 3-21
33.6 Mb — Burst Pulse and AFC .......... 3—25
3.3.6.1 AFC Motor/Integrator Option ................. 3—32
3.3.7 M+ - Debug Options .............................. . . . 3—33
3.3.8 Mz — Transmitter Phse Control .............................. 3—34
4. Plot-AssistedSetups 4—1
4.1 Oscilloscope Connections ....................... 4—2
4.2 P+ — Plot Test Pattern ...................... 4—3
4.3 General Conventions Within the Plot Commands . 4—4
4.4 Pb — Plot Burst Pulse Timing ....................... >. 4—6
4.4.1 Interpreting the Burst Timing Plot .............. 4—6
4.4.2 Available Subcommands Mthin “Pb” . . 4—7
4.4.3 TTY Information Lines “Within “Pb" ..................... 4—8
4.4.4 Recommended Adjustment Procedures ................... 4—9
4.5 Ps — Plot Burst Spectra and AFC ........... . 4—11
4.5.1 Interpreting the Burst Spectra Plots . . . . ................... 4—11
4.5.2 Available Subcommands “fithin “PS” . . ................... 4—13
4.5.3 TTY Infon-nan'on Lines “Within “Ps” . . . . 4-—15
4.5.4 Computation of Filter Loss ..................... 4—17
4.5.5 Recommended Adjustment Procedures . .......... 4—20
4.6 Pr — Plot Receiver Waveforms ............... 4—23
4.6.1 Interpreting the Receiver Waveform Plots . 4—23
4.6.2 Available Subcommands Within “Pr" ...... . . 4—25
4.6.3 TI'Y Information Lines Vlfithin “Pr” ........................... 4-26
5. ProcessingAlgorithms(draft) 5—1
5.1 IF Signal Processing ............. . . . . ............ 5—4
5.1.1 FIR (Matched) Filter ...................... 5—4
5.1.2 Automatic Frequency Control (AFC) . . . 5—5
5.1.3 Burst Pulse Tracking ...................... 5—6
5.1.4 Interference Filter .......................... 5—7
5.1.5 Large-Signal Linearization ........... . . 5—9
5.1.6 Correcn'on for Tx Power Fluctuations . . ........ 5—9
5.2 Video (“I“ and "Q”) Signal Processing ................. 5~—11
52.1 Time Series ......................... . . 5~11
5.2.2 [IR Clutter Filter for PPP-Mode . . ........ 5—11
5.2.3 Autocorrelations for PPP—Mode ................. 5—12
5.2.4 Range averaging and Clutter Microsuppression . . . . 5—13
5.2.5 Reflectivity ............................................... 5—13
RVP8 User Zr Manual
16 April 2003 Table of Contents
5.2.6 Velocity .................................................. 5—15
5.2.7 Spectrum Width Algorithms ......... 5—1 5
5.2.8 Signal Quality Index (SQI threshold) ............. 5—16
5.2.9 Clutter Correction (CCOR threshold) ............. . . 5—17
5.2.10 Weather Signal Power (SIG threshold) . . ....... 5—18
5.2.11 Signal to Noise Ratio (LOG threshold) . . . ....... 5—18
5.3 Thresholding ............................. . 5—19
5.3.1 Threshold Qualifiers .................... 5—19
5.3.2 Adjusting Threshold Qualifiers . . . .......... 5—20
5.3.3 Speckle Filters ................. . 5—21
5.4 Reflectivity Calibration ...................... 5—25
5.5 Dual PRT Processing Mode ........................ 5—30
5.5.1 DPRT-l Mode ............ 5—30
5.5.2 DPRT-Z Mode ........ ‘ 7 5—31
5.6 Dual PRF Velocity Unfolding . . . . ................................ 5—32
5.7 Optional Dual Polarization- ZDR, PHIDP, KDP, LDR, . . . 5—36
5.7.1 Overview of Dual Polarization ................................ 5—36
5.7.2 Radar System Considerations ................................. 5—38
5.7.3 RVP8 Dual-Channel Receiva' Approach . . . . 5—40
5.7.4 Overview of Processing Algorithms ............................ 5—42
5.7.5 Case 1: Fixed Transmit: Dual-Channel Receiver .................. 5—45
5.7.6 Case 2: Simultaneous Dual Transmit and Receive (STAR mode) . . . 5—46
5.7.7 Case 3: Alternating H/V Transmit: Single-Channel Receiver ........ 5—47
5.7.8 Case 4: Alternating H/V Transmit: Dual-Channel Receiver ......... 5—48
5.7.10 KDP Calculation .................................. . . . 5—49
5.7.11 Standard Moment Calculations (T, Z, V, W) ................... 5—50
5.7.12 Thresholding of Polarization Parameters . . . . . . . .. .............. 5—60
5.7.13 Calibration Considerations .......... . . . 5—61
5.8 FFT Mode ......................................... . . . 5—64
5.3.1 Overview .. .................... 5—64
5.8.2 FFT Implementation ....... 5—65
5.9 Random Phase 2nd Trip Processing ..................... 5—70
5.9.1 Overview .. .. ... 5—70
5.9.2 Algorithm ......................... 5~70
5.9.3 Tuning for Optimal Performance ....... ' ....... 5—71
5.10 Signal Generator Testing of the Algorithms ..... . . . 5—75
5.10.1 Linear Ramp of Velocity with Range . . ............... 5—75
5.10.2 Verifying PHIDP and KDP ......................... 5—76
5.10.3 Verifying RHOH, RHOV, and RHOHV ........................ 5—76
RVP8 User 's Manual
16Apr1'12003 Ibble afCantents
“fix——
6. HostComputerCommands ....... 6—1
6.1 No~Operation (NOP) ...... . . 6—2
6.2 Load Range Mask (LRMSK) ............................... 6—2
6.3 Setup Operating Parameters (SOPRM) ....................... 6—4
6.4 Interface Input/Output Test (IOTEST) . . . 6—10
6.5 Interface Output Test (OTEST) ....................... 6—11
6.6 Sample Noise Level (SNOISE) ..................... 6—11
6.7 Initiate Processing (PROC) ........... 6—13
6.8 Load Clutter Filter Flags (LFILT) ..................... 6—21
6.9 Get Processor Parameters (GPARM) .............. 6—22
6.10 Load Simulated Time Series Data (LSIMUL) ...... 6—31
6.11 Reset (RESET) ................................ 6—32
6.12 Define Trigger Generator Output Waveforms (TRIGWF). . . 6—33
6.13 Define Pulse Width Control Bits and PRT Limits (PWINFO) . 6—34
6.14 Set Pulse Width and PRF (SETPWF) ............ 6—35
6.15 Load Antenna Synchronization Table (LSYNC) . . 6—36
6.16 Set/Clear User LED (SLED) ......................... 6—38
617 T'I'Y Operation (TI'YOP) ....................... 6—38
6.18 Load Custom Range Normalization (LDRNV) ....... 6—40
6.19 Read Back Internal Tables and Parameters (RBACK). ........ 6—41
6.20 Pass Auxiliary Arguments to Opcodes (XARGS). ........ 6—41
6.21 Configure Ray Header Words (CFGHDR) ..... . 6—42
6.22 Configure Interference Filter (CFGINTF) . . ............ 6—43
6.23 Set AFC level (SETAFC) ........................... 6—44
6.24 Set Trigger Timing Slew (SETSLEW) ..... 6—44
6.25 Hunt for Burst Pulse (BPHUNT) ................... 6—44
6.26 Configure Phase Modulation (CFGPHZ) . . . ............ 6—45
6.27 Set User IQ Bits (UIQBIT S) ................... 6—46
6.28 Custom User Opcode (USRINTR and USRCONT) ..................... 6—46
R VPE User 3 Manual
16Apri1 2003 7211712 of Contents
E.“
A. Software: Basics, Installation and Backup . . . . . . . . . . . . . . . . . . . . . . A—l
A.1 Overview ...................................................... A—l
A2 Basics of Login, Logout and Shutdown . . . . . A—2
A.2.1 Power up procedure ................................... A—2
A.2.2 Local and remote login ..................................... A—2
A.2.3 Default operator and root login passwords . A—2
A.2.4 Login procedure ................................ A—3
A.2r5 Logout procedure .................... A—4
A.2.6 Powerofl‘ shutdown procedure A—4
A3 Sofiware Installation ..................... A—5
A.3.1 When to perform sofiware installation ........ A—5
A.3.2 Preparing for the installation ................ A—S
A.3.3 Installing the system soflware A . ‘ A—6
AA System Sofiware Configuration ................. _ ............... A—lO
A.4.1 Configuring the sofiplane.conf file . . ......... t ........... A—ll
A.5 System Backup and Recovery ............ A—17
A.5.1 System Backup ....... A—17
A.5‘2 System Recovery .................... o . . A—21
A.5‘3 Transferring a backup file from the RVP8 hard disk . ‘ A—22
A.6 Sofiware Upgrade and Support ........................ . . . A—24
A.6.l Where to get software upgrades . .......................... A—24
A.6.2 When should I upgrade . . .......................... A—24
A.6.3 How should I upgrade .......... A—24
A.6.4 Getfing the network upgrade files . A—25
A.6.5 Starting the “install” utility ...... A—28
A.6.6 Using the install utility ....... A—29
A.7 Network Basics ......................... A—31
A.7.1 Default Out Of The Box Configuration .......... . . i A—31
A.7.2 Making Changes to Default Configuration . . . . . . f ............... A—32
B. RVPS/RCPS Packaging . . . . . . . . . . B—l
B.1 Main Chassis General Description i . B—2
B.1.1 Main Chassis Front Panel . . . ........................... B—7
B. l .2 Main Chassis Back Panel .............................. B—8
B.1.3 Main Chassis Back Panel Power Section . B—9
3.1.4 Main Chassis Back Panel PC I/O Section v, ................... B—lO
B.1l5 Main Chassis Back Panel PC! Card Section .................... B—ll
B.Z I/O-62 and Connector Panel ................... . B~12
B.3 IFD Module (RVP8 Only) . . r .......... B—28
B44 DAFC Module (RV'PS only) ................... B—31
C. Clutter Filter Characteristics (DRAFT) . . . . C—l
D. ReferencesandCredits D—I
R VP8 User 5” Manual
16 April 2003 Table ofCaments
E. Installation and Test Procedure (DRAFT) . . . . E—l
E.1 Installation Check ........................ 15—3
15.2 Power-Up Check . . E—4
133 Setup Terminal ............................................ E—S
EA Setup “V” Command (Internal Status) ........ E—6
E.5 Setup “Me" Command (Board Configuration) ......... E—7
E.6 Setup “Mp” Command (Processing Options) ........... E—S
E.7 Setup “Mi” Command (Clutter Filters) ......... E—9
E.8 Setup “Mt” Command (General Trigger Setup) . . E—I 0
E9 Initial Setup of Information for Each Pulse Vlfldth . . B—ll
E.10 Setup “Mb“ Command (Burst Pulse and AFC) . . . . E—12
E.11 Setup “M+” Command (Debug Options) ....... . E—13
E.12 Setup “Mz” Command (Transmitter Phase Control) . . . E—14
E.13 Display Scope Test ................................. 1-3—1 5
E14 Burst Pulse Alignment ....................... E—16
E. 15 Bandwidth Filter Adjust-neat ............ E—l 7
E.16 Digital AFC Voltage Alignment (Optional) . . . E—18
E. 1 7 Analog AFC Voltage Alignment (Optional) . . 13—1 9
5.18 MFG Functional Test and Timing (Optional) ‘ . E—21
E, 19 AFC Functional Test (Optional) ............ E—22
E.20 Input IF Signal Level Check ......... E—23
E.21 Dynamic Range Check .............. E—24
E.22 Receiver Bandwidth Check . ........ 5—26
E.23 Receiver Phase Noise Check ............... E—28
E.24 Hardeopy of Final Setups .......... . . E—29
E25 IFD Stand-alone SigGen Bench Test ................................ E—30
Index Index—1
vu
RVP8 User ’r Manual
16 April 2003 Table of Contents
“M“
Figures
Figure 1—1: Analog vs Digital Receiver for Magnetron Systems .............. 1—19
Figure 1—2: Analog vs Digital Receiver for Klystron Systems ........... . i . 1—20
Figure 1—3: IF to I/Q Processing Steps .................... 1—23
Figure 1—4: I/Q Processing for Weather Moment Extraction . . . 1—26
Figure 2—1: Calibration Plot for a Stand-alone 14~Bit [FD ..... 2—10
Figure 2—2: Tradeofl‘ Between Dynamic Range and Sensitivity . . . . 2—11
Figure 2—3: Assembly Diagram of the DAFC .................. . i . 2—27
Figure 2—4: Recommended Receiving Circuit for the Coax Uplink . . . . . 2—32
Figure 2—5: Timing Diagram of the [FD Coax Uplink ............ . . . 2~33
Figure 2—6: Timing diagram of the (IQ) Data Stream . . . 2—36
Figure 4—1: Oscilloscope Display of Test Pattern ....... 4—3
Figure 4—2: Successful Capture of the Transmit Burst ..... 4—6
Figure 4—3: Example of a Filter “fith Excellent DC Rejection 4—11
Figure 4—4: Example of a Poorly Matched Filter .......... . . . 4—20
Figure 4—5: Example of a Filter “With Poor DC Rejection . . . . ..... 4—22
Figure 4—6: Example of Combined IF Sample and LOG Plot . . . . ..... 4—23
Figure 4—7: Example of a Noisy High Resolution “Pr” Spectrum . . . . 4—25
Figure 5—1: Flow Diagram of RVP8 Processing .................... 5—3
Figure 5— Linearization of Saturated Signals Above +4dBm ‘ i . ..... 5—10
Figure 5—3: Model Intensity Curve ......................... . . . 5—25
Figure 5—4: Illustration of Losses that Affect LOG Calibration i ..... 5—28
Figure 5—5: Dual PRF Concepts ......................... 5—33
Figure 5—6: Example of Dual PRF Trigger Waveforms . . 5—35
Figure 5—7: Dual Receiver Magnetron Case .......................... 5—40
Figure 5—8: Comparison of Pulse Pair and FFT Clutter Filters . . . 5—64
Figure 5—9: FFT Processing — 50 pulse example .................. . . . 5—66
Figure 5—10:Efi'ect of Wmdowing on FFT Response to Ground Clutter
Figure 5—11: Example of FFT Clutter Filter in Frequency Domain . ‘
Figure 5—12: Random Phase Processing Algorithm .............. . . . 5—74
Figure B—l: Main Chassis— Front Panel ...........
Figure 13—2: Main Chassis- Back Panel . . .
Figure 3—3: Main Chassis- Right Side View . A
Figure 5—4: Main Chassis Internal Cabling . .
Figure B—S: RVP8 I/O-62 Connector Panel ‘ A
Figure B—6: RCPS I/O-62 Connector Panel . .
Figure B—7: RVP8/IFD Module
Figure B—S: IFD Front Panel .......
Figure 8—9: View of DAFC Module ..........
Figure 0—1: 40 dB IIR Clutter Filter Responses
Figure C—2: 50 dB IIR Clutter Filters Responses
vur
R VP8 User ‘5 Manual
16 April 2003 lhble of Content:
h“
Tables
Table 1—1: Examples of Dual PRF Velocity Unfolding . . . 1—28
Table 2—1: Differences Among Versions of the [FD . . . . 2—3
Table 2—2: IF D I/O Connections ..................................... 2—5
Table 2—3: IFD Toggle Switch Settings ............................. 2—6
Table 2—4: IFD LED Indicator Interpretations . l . 2—6
Table 2—5: IFD Internal Jumper Settings ................................. 2—7
Table 2—6: Direct Connecn'ons to RVP8 Main Chassis ...................... 2—19
Table 2—7: DAFC Protocol Jumper Selections ........ 2—28
Table 2—8: Pinout for the CTI “MVSR-xxx” STALO ................... 2—30
Table 2—9: Bit Assignments for the [FD Coax Uplink .................. 2—33
Table 5—1: Algebraic Quantities “ml-tin the RVP8 Processor . 5-2
Table 5—2: Algorithm Results for +l6dB Interference ....... > ........ 5—8
Table 5—3: Algorithm Results for +26dB Interference ......... ~. . . . . 5—9
Table 6—2: RVP8 Status Output Words ........... 6—22
Table B—1: J 1 “AZ INPUT" ................................... B—l6
Table B—2: 12 “AZ OUTPUT" . . . . B—17
Table 8-3: 13 RVP8: “PHASE OUT‘ RCP8 “CONTROL" . B—18
Table B—4: J4 “EL INPUT" ............................... 3—19
Table B—5: 15 “BL OUTPUT” B—20
Table B—6: 16 “RELAY” ........................ B—21
Table 3—7: 17: RVP8 “SPARE“; RCP8 “BITE 19:0“ .............. B—22
Table B—8: 18: RVP8 “SPARE”; RCP8 “ANALOG l'N” ............ B—23
Table B—9: 19 RVP8: “MISC 1/0” ; RCP8: “FED/STATUS” . B—24
Table B—lO: 110 “SERIAL” ................................. B—25
Table B—11:J11 “SERIAL” . . 8—25
Table 3—12: I 12 “S—D” ......................... B—26
Table B—13: RVP8 BNC Connector Pin Assignments ....... B—27
Table B—l4: RCP8 BNC Connector Pin Assignments ........ B—27
Table C—l: Doppler 40dB Clutter Filter Coeficients C—l
Table C—2: Doppler SOdB Clutter Filter Coefficients ................... C—2

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