Navy Electricity and Electronics Training Series (NEETS)
Module 18 - Radar Principles
Chapter 4:  Pages Index-1 through Index-3

MODULE 18 Index

A

A-scope, 3-2

Acquisition (mode), 1-37

Airborne radar, 1-38

Airborne radar antennas, 3-20 to 3-21

Air control panel, 4-17

Altitude, 1-12

Ambiguous returns, 1-6 to 1-7

Amplitron, 2-17

Antennas, broadside arrays, 3-19

directivity, 3-15

horn radiators, 3-19

parabolic reflectors, 3-16 to 3-18

power gain, 3-15

reflectors, 3-16 to 3-19

Antenna beam width, 1-14, 3-15

Antenna system, 1-20

Antijamming circuits, 2-41

Artificial transmission line, 2-10 to 2-11

Asymmetrical multivibrator, 2-5

ATR, 2-23 to 2-26

Automatic gain control (AGC), 2-40

Average power, 1-7, 4-8 to 4-9

Azimuth, 1-3

B

Balanced mixer, 2-34 to 2-37

Bearing, 1-11 to 1-12

relative, 1-11

true, 1-3, 1-11

Bearing resolution, 1-14

Beat frequency, 1-27

Blip, o'scope, 3-3

Blocking, 2-31

Broadside array, 3-19

C

Carrier-control approach (CCA), 1-38

Carrier frequency, 1-5, 4-2

Clutter, 2-42

Coherence, 1-29

Coherent oscillator, 2-18

Conical scanning, 1-21

Continuous-wave (CW) transmission, 1-25

Cooling systems, 4-19 to 4-21

Crossed-field amplifier, 2-17 to 2-20

D

Deflection coils, 3-7 to 3-8

Dehydrators, 4-18 to 4-19

Deionization time, 2-22, 4-13

Designation (mode), 1-37

Detectors, 2-32, 2-38

Difference frequency, 1-27

Directional antenna, 3-15

Directivity, 3-15

Discriminator, 2-33

Doppler effect, 1-25 to 1-27

Dry-air systems, 4-16 to 4-19

Ducting, 1-17

Duplexers, 2-20 to 2-30

Duty cycle, 1-8 to 1-9

E

Echo, 1-2

Echo box, 4-5 to 4-8

Electronic counter-counter measures (ECCM), 2-40 to 2-41

Electrical power, 4-15 to 4-16

Elevation angle, 1-3

F

Fast-time-constant (FTC), 2-41

Feedhorns, 3-20

Frequency modulation, 1-27

Frequency spectrum, 4-2 to 4-5

Frequency synthesizer, 2-18

G

Gated AGC, 2-41

Glow discharge, 2-22

Ground-controlled approach (GCA), 1-38

Guidance radar, 1-37

Index-1

H

Hazards, 4-22 to 4-24

rf radiation, 4-22

X-rays, 4-23

Height-finding radar, 1-35

Horn radiators, 3-19

Hybrid ring, 2-28 to 2-30

I

IF amplifier, 2-38

Indicators, 3-1 to 3-14

A-scope, 3-2

PPI, 3-4 to 3-10

RHI, 3-3

Instantaneous automatic gain control (IAGC), 2-40

Intermediate frequency, 1-20

K

Keep-alive voltage, 2-22, 4-13

Keyed-oscillator transmitter, 2-13 to 2-16

Klystron power amplifier, 2-18

L

Lin-log amplifier, 2-45 to 2-47

Liquid-cooling system, 4-19 to 4-21

Logarithmic receiver, 2-45 to 2-47

M

Magic T, 2-35

Magnetron oscillator, 2-7, 2-13

Master oscillator, 2-4

Minimum discernible signal (MDS), 4-11

Missile-guidance radar, 1-37

Mixers, 2-32 to 2-37

Modulators, 2-6 to 2-11

hard-tube, 2-8

line-pulsing, 2-8 to 2-11

Monopulse, lobing, 1-23

receiver, 2-47 to 2-48

Moisture lapse, 1-17

Moving target indicator (MTI), 2-42 to 2-45

N

Noise, 2-31

Noise figure, 4-11

Nutating, 1-21

P

Parabolic reflectors, 3-16 to 3-18

Parasitic array, 3-17

Peak power, 1-7

Persistence, CRT, 3-10

Phantastron, 3-11

Pip, o'scope, 3-3

Plane wavefronts, 3-17

Planned-position indicator (PPI), 3-4 to 3-10

Power, average, 1-7

gain, antenna, 3-15

measurement, 4-8 to 4-9

peak, 1-7, 4-8 to 4-9

Power-amplifier transmitter, 2-16 to 2-20

Preamplifier, 2-33

Pulse-doppler transmission, 1-29

Pulse-forming network, 2-11

Pulse-modulation transmission, 1-28

Pulse-repetition rate (PRR), 1-5

Pulse-repetition frequency (PRF), 1-5, 1-7 to 1-10

Pulse-repetition time (PRT), 1-6

R

Radar, accuracy, 1-15 to 1-18

altitude, 1-12

altimeter, 1-32

antennas, 3-15 to 3-21

beams, 1-14, 1-20, 3-15

bearing, 1-11

classification and use, 1-30 to 1-32

components, 1-18 to 1-20

duplexers, 2-20 to 2-30

indicators, 3-1 to 3-14

maintenance, 4-1 to 4-24

receivers, 2-30 to 2-48

safety, 4-22 to 4-24

support systems, 4-14 to 4-21

synchronizers, 2-1 to 2-6

Index-2

Radar, accuracy - Continued transmission methods, 1-25 to 1-30

continuous-wave, 1-25 to 1-27

frequency-modulation, 1-27

pulse-doppler, 1-29

pulse-modulation, 1-28 to 1-29

types, 1-33 to 1-39

airborne, 1-38

CCA and GCA, 1-38

missile guidance, 1-37

search, 1-33 to 1-35

track, 1-37

Radiation hazards, 4-22

Range, 1-3 to 1-6

Range gate, 3-11

Range height indicator (RHI), 3-3

Range marker, 3-11

Range resolution, 1-13

Range step, 3-13

Ranging circuits, 3-10 3-14

Receivers, 2-30 to 2-48, 4-9 to 4-12

bandwidth, 4-12

components, 2-33 to 2-39

logarithmic, 2-45 to 2-47

monopulse, 2-47 to 2-48

moving-target indicator (MTI), 2-42 to 2-45

sensitivity, 4-10 to 4-12

special circuits, 2-40 to 2-42

superheterodyne, 2-32 to 2-39

Recovery time, 1-5, 4-13 to 4-14

Reflex klystron, 2-33

Refraction, 1-17

Refractive index, 1-17

Relative bearing, 1-11

Resolution, 1-13 to 1-14

Resonance chamber, 4-5

RF radiation hazards, 4-22

Ring time, 4-7 to 4-8

S

Safety, 4-22 to 4-24

Scanning, 1-20 to 1-25

Sea clutter, 2-42

Search radar, 1-12, 1-33 to 1-36

Second-sweep echoes, 1-6

Sensitivity time control (STC), 2-40

Slant range, 3-2

Spectrum analyzer, 4-2

Standing wave measurement, 4-14

Superheterodyne receiver, 2-32 to 2-39

Support systems, 4-14 to 4-21

Synchronizers, 2-1 to 2-6

T

Thyratron, 2-12

Timer, 2-1

TR tube, 2-21 to 2-26

Tracking radar, 1-37

Transmission methods, radar, 1-25 to 1-30

Transmitter frequency, 4-2 to 4-8

Transmitter power measurement, 4-8 to 4-9

Transmitters, 2-6 to 2-20

keyed-oscillator, 2-13 to 2-16

power amplifier, 2-16 to 2-20

Traverse signal, 1-24

Trigger generator, 2-1

Trigger pulses, 2-2

True bearing, 1-3, 1-11

Two-dimensional radar, 1-34

V

Vertical plane, 1-3

Video enhancement features, 2-39

Voltage standing wave ratio (VSWR), 4-14

W

Wavefronts, 3-16

X

X-ray hazard, 4-23

Index-3