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Part 1: Run simulations of the existing Poker Flat ISR
Choose the Poker Flat ISR in Single Pulse 480 microsecond mode
Run for 24 hours during Jan. 1st at a 81 45 degree elevation using 240 seconds of integration
Determine how many seconds you can reduce the integration period to and still have less than 10% error at all times at altitudes of:
700 km
500 km
Describe what happens when the integration period gets short.
Part 2: Run simulations of a modified Poker Flat ISR
Modify the Poker Flat radar by making it larger or smaller. Assume any area you add or subtract has active antenna, so the area and peak power will both scale together linearly. To do this, you will need to know the following parameters about the Poker Flat ISR:
Freq: 500E6 450E6 HzPresent
diameter: 42 mArea: ~ 900 m^2
Typical peak power: 1.0E6 7E6 W
Tau7 pulse Pulse length: 1920480.0E-6 seconds
Tau7 pulse mode duty Duty cycle: 0.096
Jan 1, 81 45 degree elevation.
- Latitude 78 65 degrees, longitude 16 degrees-147degrees
Determine how many seconds 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?