User's Manual Part 2

T ECHNICAL D OCUMENTATION P ROTECTING P EOPLE AND A SSETS
®
D ATE : 22 M ARCH 2017 | V ERSION : 1.4
75
R ANGER -X5 R ADAR S YSTEM
T
ROUBLESHOOTING
,
M
AINTENANCE
,
AND
C
ALIBRATION
EEC
®
|
C
OMPANY
P
ROPRIETARY
5.1.4. Unambiguous Velocity and Dual PRF Mode Verification Procedure
1. Apply power to the radar system. Verify or select the following settings.
• Point of Control – REMOTE
• Modulator Power – On
• Radiate Power - Off
2. Obtain control of the radar system using the EDGE host workstation in the Surveillance
mode of operation.
3. Set the data range to a value of 45 kilometers.
4. Select a gate width/range resolution of 15.625 meters.
5. Open an A-scope window and select the V (velocity) moment for display.
6. Select a pulse width of 2usec at a PRF of 3000.
7. Using the Table 10 as a reference verify the velocity scale changes to match the Nyquist
interval for each mode of operation:
• No-unfolding,
• Unfolding 3:2
• Unfolding 4:3
• Unfolding 5:4.
Velocity Scale and Nyquist Interval
The
wavelength of
9500
MHZ is
0.031557101
meters or
3.155710084
centimeters
The Fold Velocity at
3000
PRF is
23.66782563
meters per second
3:2
4:3
5:4
The Fold Frequency for this input would be
1500
Hertz or
23.7
meters per second
47.3
71
94.7
Table 10. Velocity Scale and Nyquist Interval
5.1.5. Data Output Verification Procedure
1. Apply power to the radar system. Verify or select the following settings.
• Point of Control – REMOTE
• Modulator Power – On
• Radiate Power - Off
2. Obtain control of the radar system using the EDGE host workstation in the Surveillance
mode of operation.
3. Set the data range to a value of 45 kilometers.
4. Select a gate width/range resolution of 15.625 meters.
5. Open an A-scope window and a real-time data display window.
6. Using the Table 11 as a reference verify that each type of data moment listed can be
selected for display in the A-scope window and the real-time data display window.
Data Moment
Pass / Fail
Uncorrected Reflectivity (UZ)

Pass

Fail
Corrected Reflectivity (Z)

Pass

Fail
Radial Velocity (V)

Pass

Fail
Spectrum Width (W)

Pass

Fail
Differential Reflectivity (ZDR)

Pass

Fail
Differential Phase Shift (PhiDP)

Pass

Fail
Specific Differential Phase (KDP)

Pass

Fail
Polarimetric Correlation Coefficient (RhoHV)

Pass

Fail
Table 11. Data Output Verification