ATSEP -Surveillance Questions with Verified
Correct Answers
Beam Width
What determines range resolution of radar system
Azimuth resolution
Measure of how well a radar can distinguish 2 targets of different bearing but same range
Range resolution
Measure of how well a radar can distinguish 2 targets of same bearing but different range
1030 MHz
Freq of the interrogator
1090 MHz
Freq of the transponder
8us
Distance between 2 pulses in Mode A
21 us
Distance between 2 pulses in Mode C
Elevation, azimuth, range
A 3-dimensional radar measures
scattering ability of the target
Radar cross section means
, matched filters
Receiver has what filter
DPSK
Uplink modulation
P6
Uplink format pulse
Garble
is a fundamental problem in the design of the conventional SSR system and the situation is
worsened by increased traffic.
8-12
X-band range
Received Reply Meant for other Interrogator
RUIT
monostatic
Tx and Rx are the same
8107 m
Get max range
o Given: Tx power = 2kW, antenna gain = 28 dB, freq = 10GHz, Radar cross section area =
12m2, MDS = -90 dBm
o Choices: 1k, 2k+, 4k+, 8k+
Multi Doppler Filter
Correct Answers
Beam Width
What determines range resolution of radar system
Azimuth resolution
Measure of how well a radar can distinguish 2 targets of different bearing but same range
Range resolution
Measure of how well a radar can distinguish 2 targets of same bearing but different range
1030 MHz
Freq of the interrogator
1090 MHz
Freq of the transponder
8us
Distance between 2 pulses in Mode A
21 us
Distance between 2 pulses in Mode C
Elevation, azimuth, range
A 3-dimensional radar measures
scattering ability of the target
Radar cross section means
, matched filters
Receiver has what filter
DPSK
Uplink modulation
P6
Uplink format pulse
Garble
is a fundamental problem in the design of the conventional SSR system and the situation is
worsened by increased traffic.
8-12
X-band range
Received Reply Meant for other Interrogator
RUIT
monostatic
Tx and Rx are the same
8107 m
Get max range
o Given: Tx power = 2kW, antenna gain = 28 dB, freq = 10GHz, Radar cross section area =
12m2, MDS = -90 dBm
o Choices: 1k, 2k+, 4k+, 8k+
Multi Doppler Filter
