Radar Operating Principles Flashcards
What are 5 benefits of Radar?
1) Operate day or night
2) Operate in almost all weathers
3) Has very broad coverage
4) Detects and tracks moving objects
5) Unmanned, 24/7
What are the 4 major radar applications, in order of increasing freq?
1) Search
2) Search & Track
3) Fire Control & Imaging
4) Missile Seeking
The max range of a radar is determined by its…
PRF
Low PRF = ________ range
High PRF = ________ range
Longer
Shorter
High bandwidth = __________ detection range
Low bandwidth = __________ detection range
Shorter
Longer
These techniques allows a radar to achieve the range of a long pulse and the resolution of a short pulse:
Pulse compression
What are the 5 radar measurements?
1) Time
2) Elevation
3) Azimuth
4) Range
5) Range-rate
The amount of the radar signal intercepted or redirected back toward the radar is known as…
RCS (Radar Cross Section)
_______________ measures how effective the target is in reflecting the radar signal
Target RCS
A target’s RCS depends on what 4 things?
1) Size
2) Shape
3) Orientation
4) Composition
What determines the size, shape, motion and orientation of objects?
Space Object Identification (SOI)
What are 4 radar environmental considerations?
1) Ionospheric Refraction
2) “ Attenuation
3) “ Dispersion
4) Faraday Rotation
What are 4 radar limitations?
1) Multi-path reflection
2) Over-the-horizon diffraction
3) Ducting
4) Clutter
What are 2 countermeasures to radar?
Chaff & decoys
Low tx freq & Long wavelength =
____________ penetration
____________ resolution
Better
Worse
