Question

When using single sensor ASR−9 with Mode S, separate aircraft operating less than 60 miles from the antenna by ____ miles

A) 5 miles
B) 10 miles
C) 15 miles
D) 20 miles

Answer 1

To calculate the distance from a radar station to a reflecting object, you multiply the speed of light (3x10^8 m/s) by the travel time of the radar pulse (6x10^-5 s), and divide by 2, resulting in a distance of 9 kilometers.

Step-by-step explanation:

To find the distance to a reflecting object using a radar, you can use the formula:

Distance = (Speed of the pulse × Time of travel) / 2

The speed of a radar pulse is the speed of light, which is approximately 3×108 meters per second. The time of travel is the time it takes for the pulse to go to the object and back. Since we are given the time as 6×10−5 seconds and we want to find the one-way distance, we divide the roundtrip time by 2.

Using these values, the calculation is as follows:

1. Speed of light (c) = 3×108 m/s
2. Time (t) = 6×10−5 s
3. Distance (d) = (c × t) / 2
4. Distance (d) = (3×108 m/s × 6×10−5 s) / 2
5. Distance (d) = (18×103 m) / 2
6. Distance (d) = 9×103 m

Therefore, the distance from the radar station to the reflecting object is 9 kilometers.