generateprojects(nprojects, ratingmin, ratingmax, timemode, timesigma, timemax, freqtransexponent, freqwt, freqexponent, decmin, decmax)
Description
This function generates simulated observing projects which a
particular frequency distribution, observing time distribution, rating
distribution, and RA/DEC distribution.
Currently, the model for the observing frequency distribution is
|
transtransexp*(1 + freqwt*(freq/freqmax)freqexp),
|
(1.36) |
where trans is the atmospheric transmission at 1 mm of precipitable water
vapor. The first term provides for the basic trend that you observe
more often where the atmosphere is more transparent. The freqwt and
freqexp permit the simulator to place more weight on higher frequencies,
where the atmosphere is less transparent but the science may be deemed
to be more interesting.
The observing time distribution is a Gaussian with peak located at
timemode, a width of timesigma, a minimum observing time of one hour,
a maximum observing time of timemax, and quantized in integer numbers
of hours.
The project rating distribution is flat between ratingmin and
ratingmax, with only integer values.
The distribution in RA/DEC is assumed to be flat (ie, fewer sources at
hogh and low declination), more at the equator. The declination range
is set by decmin and decmax.
The distributions of ratings, observing frequencies, observing times, and RA/DEC
are assumed to be independent.
Arguments
| nprojects |
|
Number of projects to generate |
|
|
Allowed: |
Int |
|
|
Default: |
100 |
| ratingmin |
|
Minimum rating |
|
|
Allowed: |
Int |
|
|
Default: |
1 |
| ratingmax |
|
Maximum rating |
|
|
Allowed: |
Int |
|
|
Default: |
10 |
| timemode |
|
Peak of distribution of allotted observing times |
|
|
Allowed: |
Quantity |
|
|
Default: |
'5h' |
| timesigma |
|
Width of distribution of allotted observing times |
|
|
Allowed: |
Quantity |
|
|
Default: |
'10h' |
| timemax |
|
Extent of tail of distribution of allotted observing times |
|
|
Allowed: |
Quantity |
|
|
Default: |
'20h' |
| freqtransexponent |
|
Exponent of atmospheric transmission in freq distribution |
|
|
Allowed: |
Quantity |
|
|
Default: |
2.0 |
| freqwt |
|
Multiplier to increase weight of high frequency observations |
|
|
Allowed: |
Quantity |
|
|
Default: |
2.0 |
| freqexponent |
|
Exponent to increase weight of high frequency observations |
|
|
Allowed: |
Quantity |
|
|
Default: |
1.5 |
| decmin |
|
Minimum declination in dec range |
|
|
Allowed: |
Quantity |
|
|
Default: |
'-90deg' |
| decmax |
|
Maximum declination in dec range |
|
|
Allowed: |
Quantity |
|
|
Default: |
'52deg' |
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