3D155 Volume 3 EOC Flashcards
DASR, The PSR solid state transmitter has how many amplifier modules?
8
DASR, what is the target range of the psr?
60nm
DASR, what is the minimum peak output power for the psr?
long pulse-18KW
short pulse-19.5KW
DASR, what is the psr pulse compression ratio?
89:1
DASR, what is the psr target capacity?
700 tracks or 1000 plots
MSSR, The MSSR has how many interrogators?
2
MSSR, What is the center frequency of the MSSR transmitter?
1030 +/-.01MHz
MSSR, What is the MSSR receiver sensitivity?
Better than -90 dBm
MSSR, What is the MSSR receiver center frequency?
1090 +/-.5MHz
DASR, what radar technology was developed in 1948 to correct ground clutter problems?
MTI
DASR, what is ‘blind speed’ and what radar technique is sued to fight it?
at certain speeds the Doppler shift of a target aligns with the PRT and the target becomes invisible to the radar; staggered prt are used to reduce blind speeds.
DASR, what is the tangential problem, and how has the DASR solved it?
when an aircraft flies tangentially (90 degrees) from the radar and has a zero radial velocity because the aircraft is not moving towards or away from the radar and MTI cancels it; MTD can track zero velocity targets because it uses a clutter map to cancel ground clutter.
DASR, what are ‘dim speeds’, and what are the known dim speeds for the DASR?
similar to blind speeds, where probability of detection of a target is decreased; 80 and 700 knots.
DASR, what function does the DASR use to prevent ‘second time around’ target problems?
m of n, or binary integrator.
DASR, what two solutions allow the DASR to use solid state transmitters?
multiple amplifier modules and pulse compression.
DASR, which feed horn path is used for receive only?
high beam
DASR, what is the sensitivity of the target and weather ports while in circular polarization?
circular polarization reduces target port sensitivity by 3dB while increasing the weather port sensitivity by 8dB making both of them 3dB
DASR, what polarization mode is used in bad weather?
circular
DASR, which component of Unit 7 provides the user interface to the system by way of an operator’s terminal?
two sun workstations or SCDI.
DASR, how many receive channels does the DASR have? how many receivers are in each channel?
two channels; three receivers each
DASR, how many transmitter amplifier modules does the psr have?
eight
DASR, what TCMM card detects antenna/transmitter group VSWR, PW, and duty cycle faults and generates an El signal, and what does the El signal do?
the transmitter rF monitor CCA; El disable sthe RF drivers.
MSSR, what is the main reason that secondary radar can not be relied upon as the sole radar feed?
a secondary radar system cannot operate without target cooperation.
MSSR, how many challenge modes are available to the mssr, and what are they?
four; modes 2/3/c/b
MSSR, what is the mssr side lobe suppression process called, and how does this process work?
receiver side lobe suppression; if the control video is stronger than the sum, the video is discarded.
MSSR, if two aircraft have the same discrete 3/a code and one of them is real, what is the other?
false target
MSSR, what comparison is made between difference and sum to determine the direction a target is from boresight?
phase; amplitude
MSSR, what is the result between sum and difference if the aircraft is right of boresight?
the resultant difference port phase leads the resultant sum port phase by 90deg
MSSR, what are the major components of the interrogator?
tx, rx, plot processor, and tracker
MSSR, where are the transmit pulses developed?
the mode generator PEC
MSSR, the lva antenna makes what three patterns?
sum, difference, and control
MSSR, what information does the plot processor report contain?
the aircraft’s azimuth, range, mode 3/a code, and altitude
MSSR, how long will the tracker remain in a coast state?
four scans.
MSSR, what is the specialized test set used to maintain the monopulse beacon radar?
mbts II
MSSR, what mbts module checks the performance of the test set itself?
BIT module
STARS, what type of software is responsible for managing the computer hardware and all applications?
OS
STARS, what are some of the hardware resources an operating system, such as UNIX, is responsible for managing?
CPU, main memory (RAM), secondary memory (disk, ROM), and peripheral devices.
STARS, do any applications bypass the OS and access computer hardware resources directly? why?
no; because bypassing the os will cause a general protection fault.
STARS, there are two main parts of unix os; which part controls the hardware resources? which part provides user interface?
the kernel; the shell
STARS, what are the three levels of unix permissions?
user
group
other
STARS, what are the three types of unix permissions?
read
write
execute
Define STARS.
an open architecture, distributed software-based ATC automation system that is the replacement system for the DOD Rapcon and the FAA tracon air traffic control facilities.
STARS, what are the three facility types in STARS?
SCSC
OSF
SOS
STARS, the SCSC provides centralized control of what?
stars field support and hardware/software development
STARS, what does STARS replace?
pidp ii dbrite video mapper arts earts ratcf-dair micro-earts
STARS, what does the sos receive from the ARTCC?
nas information, etms data, and interfacility flight data necessary for accurate aircraft tracking.
STARS, what are the five roles TAS performs?
radar data display flight data interface and display operator interaction data recording status monitoring and sys control
STARS, how many different workstation does stars use? list them.
four.
mcw/tcw/tdw/gpw
STARS, how many different lans does stars use with the two service levels? list them
four.
fsLANa, fsLANb, esLANa, esLANb
STARS, how many different displays does STARS use? list them.
mcw/tcw/tdw/gpw/supplemental
STARS, what size is the ddm monitor screen? what is the resolution?
size 19.6
STARS, what size is the ddm monitor screen? what is the resolution?
size 19.6 x 19.6 inches
resolution 2048 x 2048
STARS, how are operational adjustments and maintenance alignments made on the DDM?
by remote controller
STARS, what is the purpose of the bold letter designators on the modules?
facilitate easy identification and troubleshooting
STARS, where can you find the interface for all major inputs to the DDM?
The read panel.
