A CPID is a control program ID, this means that the number given to the radar will dictate how the radar probes the ionosphere. Common CPID's which run on most radars, most of the time, have numbers between 100-999. Numbers above 1000 are allocated to each institution. SuperDARN Canada is allocated numbers between 3000-3999. For a complete list of which number ranges are allocated to which institutions, see the overview here. An incomplete list of other institutions CPIDs can be found here.
A CPID can be both negative and positive. Negative CPIDs are used in Discretionary Time, this includes common mode programs. Positive CPIDs are used for common mode programs (100-999) running in Common Time and special programs (1000+) in Special Time. A radar schedule is produced around 8 weeks in
advance dictating when Common, Discretionary and Special Times are allocated. These can be checked on our radar schedule page, more information on submitting a request to run a certain CPID or develop a new experiment can be found on the Scheduling Working Group homepage. If you are using data from a special time mode on a specific radar in your study, make sure you contact the PI of the radar and the developer of the special time mode to collaborate!
Beam Scanning Patterns Used by SuperDARN Canada
Normal sequential scan
Camping beam (beam 7)
RBSP Scan- Saskatoon Radar Example
ICEBEAR Collaboration Scan Pattern
Frequently Used CPID on SuperDARN Canada Managed Radars
Scans sequentially from beam 0 to beam 15, or in reverse depending on radar. This program spends 7 seconds on each beam and a full scan is built over ~2 minutes. The range gates in this experiment are 45 km wide.
Scans sequentially from beam 0 to beam 15, or in reverse depending on radar. This program spends 3.5 seconds on each beam and a full scan is built over ~1 minute. The range gates in this experiment are 45 km wide. Uses the first common frequency of ~10kHz compared to the 150 program. This is the most common program to be found running on SuperDARN Canada radars.
Utilises two channels, where channel A will run common time program and channel B runs as discretionary. 152 is a slow scan (2 min) and 153 is a fast scan (1 min).
Scans sequentially from beam 0 to beam 15, or in reverse depending on radar. This program spends 6 or 3 seconds on each beam and a full scan is built over 1 or 2 minutes. Any remaining time in the 1 or 2 minute scan is used to scan through 12 set frequencies to find the frequency with the best ionospheric scatter.
The interleaved scan experiment was requested in 2016 to support the ERG Japanese satellite mission. The experiment 'interleaves' the beam numbers, for example a 16-beam radar will proceed as follows: 0-4-8-12 - 2-6-10-14 - 1-5-9-13 - 3-7-11-15 for a forward scan. This experiment aimed to capture doppler velocity oscillation related to Pc3 geomagnetic pulsations near the cusp. The experiment used 45km range gates and one scan took ~1 minute.
Essentially the same experiment as 191, but with more scope to produce sounding frequency data. An additional frequency is used to sound from beams in a different interleaved order (0-2-4-6-8-10-12-14-1-3-5-7-9-11-13-15).
This experiment was first run in 2012 to support the Radiation Belt Storm Probes (Van Allen Probes). It is triggered for 30 minutes if the DST (Disturbance Storm Time) is below a given threshold. A mono-beam pattern for this experiment on a forward scanning radar would look like: 0,n-1,1, n,2, n+2,3,n-1,4,n,5,n+2,6,n-1,7,n,8,n+2,9, ... where n is the meridional beam, effectively using 3 'camping' beams. This experiment uses 45km range gates. For more
information, see the VT page.
This experiment progresses in sequential beams from 0-15 or 15-0 depending on the radar. It uses an 11-pulse sequence on each beam, that consists of a single pulse followed by a back to back 5-pulse Farley sequence. Analysis of this sequence produces a 12-pulse ACF with no missing lags. This experiment uses 45km range gates and takes ~2 minutes to make a full scan.
This scan is used in conjunction with the Resolute Bay Incoherent Scatter Radar.
No information available.
Themis Scan/ Camping Beam
This scan uses a beam pattern which in between each normal beam the radar returns to a specified 'camping' beam. For example if the camping beam were beam number 7, a forward radar would show a beam pattern as such: 0,7,1,7,2,7,3,7,4,7,5,7,6,7,8,7,9,7,10,7,11,7,12,7,13,7,14,7,15,7,7,7,7,7,7,7. This experiment uses 45km range gates and take ~2 minutes to give a full scan.
This mode is designed to enable the sampling of ionospheric signatures of Pc3-4 ULF waves at frequencies ~10-50 mHz. This was achieved by using three sampling beams which provides a sampling rate of about 9 s (Nyquist frequency 55.6 mHz). For example, a radar may use beams 0, 3 and 6 (3 beams each separated by 2 unused beams) spending 3 seconds on each beam, beams used differ from radar to radar.
This mode is run in conjuction of the e-POP satellite passes. It is run on any number of beams which overlap with the e-POP trajectory. The experiment can use up to 4 different frequencies, with the intention that the RRI (Radio Receiver Instrument) experiment on board e-POP will receive the transmission through the ionosphere. For more information on e-POP and the RRI, see the ESA
Listening only experiment. The radar 'listens' on each beam consecutively from beam 0-15 or 15-0 depending on the radar. There are no transmitted pulses, as such this mode is very low power and characterises the background noise with no backscatter from the ionosphere present.
Listening Normal Scan
Same as 151 Normal Scan, but with an added 'listening time' at the end of a full scan. The radar 'listens' on a second 'slice'.
Listening Normal Scan 2
Same as 151 Normal Scan, but a second slice is used to listen simultaneously on a different frequency where the beam direction of the receive frequency is always offset from the transmit frequency.
Polite Scan 2
Polite scan (3380) but on two frequencies simultaneously.
Special time mode. This scan is to run in conjunction with an Incoherent Scatter Radar with 1 second integration time over 9 beams, with a total scan time of 10 seconds. This scan was introduced for Incoherent scatter radar World Day.
2 minute scan with a 7 second integration time.
No information available.
Two F Sound
This experiment uses the sequential beam pattern using two frequencies alternating between scans. The experiment uses 45km range gates and takes ~2 minutes to produce a full scan for both frequencies.
Two F One Beam
This experiment uses two alternating frequencies on a single beam. This scan uses an integration time of 3 seconds and a 7 pulse sequence.
Tau Scan Canada/Pulse 20 Scan
No information available.
ICEBEAR Collaboration Mode
This mode is run in collboration with the ICEBEAR radar. To increase temporal resolution, overlapping with the ICEBEAR field of view, only beams 0,2,4,6,8 are used. Each beam is used sequentially for 2 seconds each. Leading to a 'full scan' every 10 seconds. A 15 km range gate width is used in this experiment. Read more on ICEBEAR here.