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Run simulations of the existing
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Millstone Hill ISR
Choose the Svalbard Fixed (up B) Millstone Misa ISR in tau7 single pulse 480 microsecond mode.
Run for 24 hours during Jan. 1st at a 81 degree elevation using using 240 seconds of integration at 90 degrees elevation.
Determine how many seconds you can reduce the integration period to and still have less than 20% 10% error at all times at altitudes of:
1000 km
500 km
750 km altitude.
Describe what happens when the integration period gets short .
Run simulations of the Svalbard fixed with 2x the diameter
Create a new radar by giving the Svalbard fixed radar twice the diameter. To do this, you will need to know the following parameters about the Svalbard fixed ISR:
(1 second).
- Repeat the second and third steps at an elevation of 4 degrees and a 2000 microsecond pulse and an altitude of 500 km..
Build a low power Millstone Hill background ISR
The idea of this exercise is to build a low power version of the Millstone zenith antenna that can make a measurement every 5 minutes. To do this, use the Simulate a new ISR tool. Use the present zenith antenna which has the following characteristics:
Freq: 440E6 Hz
Diameter: 68 m
Pulse length: 480
Freq: 500E6 Hz
Present diameter: 42 m
Typical peak power: 1.0E6 W
Tau7 pulse length: 1920.0E-6 secondsTau7 pulse mode
0.05 duty cycle: 0.096
88 Jan 1, 81 degree elevation.
- Latitude 78 42 degrees, longitude 16 -71 degrees
Determine how many seconds low peak power you can reduce the integration period to and still have less than 20% error at all times at altitudes of:
1000 km
500 km
How much difference does this extra aperture make at 1000 km? At 500 km?
Now change the elevation at 5 degrees (its a virtual radar, after all!). What happens at 1000 km altitude? What parameter could you change to make things better at 1000 km?use to get 10% error at 500 km at 5 minutes integration across the entire day on Jan 1st..