655265

Vaisala IRIS Radar Manual

107
Zoom out
Zoom in
Previous page
1/116
Next page
PRF
Pulse Repetition Frequency measured in Hz (pulses per second). When measuring
PRF, a pulse contains transmit, receive, and dead time phases. PRF aects range
folding and velocity folding detection. Normal PRF values for Doppler radars are up to
1000 Hz. Vaisala radars generally operate around 400-700 Hz. In Vaisala IRIS
products, PRF limits the area displayed in radar images and the maximum measurable
wind speed.
PRT
Pulse Repetition Time
PhiDP
Dierential Propagational Phase Shift. The phase dierence between the HH and VV
(co-polarized) channels of a polarization radar. It is calculated by taking the argument
of the covariance of these two channels. The dierential phase increases with range
more rapidly in regions of heavy rain.
PhiH or PHIV
The average phase dierence between the co- and cross-polar channels for a dual
channel polarization radar operating in fixed or switching mode. The H and V notation
indicates the transmit polarization.
Products
Calculated from ingest files that are collected during the execution of a TASK.
Products may be pictures, data or text. For example, PPI and RHI.
Protected areas
Regions around the radar (such as runway locations) for which special alerts are
required based on detected radar data.
Pulse
A short burst transmission signal sent by the radar, used to measure the weather
activity in atmosphere. The reflection measurements from a pulse are sorted into bins.
See also Bin (page 103).
RAW product
Spherical coordinate data product obtained directly from the raw ingest data. The
data are stored in compressed format so they can be recorded on tape or sent to a
workstation for further processing.
RHI product
Range Height Indicator. This is a classic radar scan geometry used in IRIS where the
azimuth is held constant and the antenna is scanned in elevation. The resulting picture
is a two-dimensional vertical slice through the atmosphere.
RVP900
Digital IF Receiver and Signal Processor. A floating-point programmable signal
processor which directly samples the IF signal from a radar.
Rainfall Rate (R)
Rate of accumulation of precipitation in units of mm/hour. For snow, this is usually
refers to the liquid equivalent.
Range folding
Radar signal echoes from outside the radar maximum range that are incorrectly
displayed within the radar measurement area. Also called range aliasing.
Glossary
105
… 107 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for Vaisala IRIS Radar at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of Vaisala IRIS Radar in the language / languages: English as an attachment in your email.

The manual is 5,74 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info