ISR simulation tools
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 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. To do this, you will need to know the following parameters about the Poker Flat ISR:
Freq: 500E6 Hz
Present diameter: 42 m
Typical peak power: 1.0E6 W
Tau7 pulse length: 1920.0E-6 seconds
Tau7 pulse mode duty cycle: 0.096
Jan 1, 81 degree elevation.
- Latitude 78 degrees, longitude 16 degrees
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?