O字彙

O-type linear beam tube
O.P. carrier telephone system
O/R address (Originator/Recipient adress)
objective measures of performance
oblique orbit
obliquity factor
observation satellite
obstacles in wavegudie
obstruction fading
occupied frequency band
ocean area reconnaissance satellite
oceanographic satellite
Octachedral Research Satellite
octet
ODOP (off-set Doppler frequency)
OEIC
offered load
office of telecommunications
office， cnetral
Offiset QPSK (OQPSK)
OGT (Ortho-Mode Transducer)
OH (hydroxyl)
Ohm's law
oil slick dtection
Omega match
omnigraph
OMT (Ortho-Mode Transducer)
onoadaptive prediction
OOS (Out Of Service)
OPE (One Point Exchange)
operator
OPMP (Operational AMPlifier)
optelectronic component
optimality
optoelectronic integration
OQPSK (Offest QPSK)
orbiter
orderly release
Oreol
organ-piep canner
origin code
Original Called Number
origination Point Code
Originator/Recipient address (O/R address)
Orignation ISC Point code
orthogonalizable code
orthogonalization
oscialltor， IMPATT
oscillating system
oscilloscope (OSC)
Osumi
OTDR (Optical Time Domain Reflectometry)
other-than-earth satellite
oulets capacity
outage
outbound link
outdoor antenna
outlet
outstanding RQ
outward line
overdamping
overflowing
overfolw oscillation
overhead cable
overlapping
overloading
overload， probability of
overocean communications
oversampling
overseas call
overshoot
overspread channel
OW (Ordinary Wave)
own code
oxide isolation

obique axis mount
obique radio transmission

Octahedral Research Satellite
octahedral satellite

odd function
odd mode
odd parity
odd parity check
odd sequence

off-axis antenna gain
off-axis rays
off-hook
off-hook service
off-line
off-line processor
off-path signal
off-set Doppler frequency
off-set wavegiude

offset
offset antenna feed
offset distance
offset frequency
offset PSK
offset QPSK (OQPSK)
offset QPSK modulation
offset-fed dipole (slot)
offset-fed reflector

offset， butt-joing connector lateral
offset， butt-joint connector combined

omni antenna
omni-bus

omnidirectional
omnidirectional antenna
omnidirectional signal

on line
on the air
on time key
on-axis fed antenna
on-board attitude control system
on-board frequency band translation
on-board processing
on-hook
on-line cryptographic device
on-line data processing
on-line encryption
on-line monitor
on-line operation
on-location satellite network
on-of control system
On-Off Keying{=OOK}
On-Off Keying{=OOK} modulation
on-off operation mode

one way
one-bit coding
one-node network
one-port amplifier
one-sided polarity correlation
one-sided spectrum
one-sided z-transform
one-step convergence
one-step decoding
one-step majority-logic decoding
one-way channel
one-way checksum
one-way communication
one-way hafl-duplex circuit
one-way repeater
one-way signal

open Cassgrain antenna
open channel
open system environment
Open Systems Interconnection {=OSI}
open two-wire line
open wire carrier telephone system
open-circuited line
open-loop adaptation
open-loop control system
open-loop DPCM
open-wire carrier communication
open-wire carrier line
open-wire carrier telephone channel
open-wire link
open-wire voice line

operating frequency
operating mode
operating point
Operating System{=OS}

Operation And Maintenance
operation condition

Operational AMPlifier (OPAMP)
operational communication system
operational frequency

optical amplification
optical attenuation
optical bandwidth
optical bus
optical bus power margin
Optical Character Reader{=OCR}
optical chopper
optical communication receiver
optical component
optical computer
optical comunication
optical confinement factor
optical continuous wave reflectometer
optical detection
optical detector， avalanche photodiode (APD)
optical detector， capaciance of
optical detector， quantum efficiency of
optical detector， responsivity of
optical detector， sensitivity of
optical detector， sillcon (Si)
optical differential mode attenuation
optical emission
optical energy
optical fiber
optical fiber cable
optical fiber communication
optical fiber sensors
optical fiber system
optical fiber， angular momentum barrier of
optical fiber， attenuation of
optical fiber， bandwidth-length product of
optical fiber， bend loss of
optical fiber， buffer jacket of
optical fiber， characteristics of
optical fiber， cladding of
optical fiber， core of
optical fiber， crack velocity of
optical fiber， critical radius of curvature of
optical fiber， drawing of
optical fiber， facture stress of
optical fiber， far field intensity distribution of
optical fiber， Fresnel refection of
optical fiber， impulse response of
optical fiber， joint losses of
optical fiber， jointing of
optical fiber， losses of
optical fiber， measurements of
optical fiber， microbending of
optical fiber， near field intensity distribution of
optical fiber， pigtail of
optical fiber， plastic lcad of
optical fiber， polarization of
optical fiber， preform of
optical fiber， preparation of
optical fiber， proof testing of
optical fiber， ray model of
optical fiber， scattering losses of
optical fiber， sillica rich glass
optical fiber， splices of
optical fiber， spun of
optical fiber， strength and durability of
optical fiber， stress corrosion of
optical fiber， structure of
optical fiber， theoretical cohesive strength of
optical fiber， transmission characteristics of
optical fiber， triangular profile of
optical filter
optical frequency division multiplexing
optical gain
Optical Intensity Modulation (OMI) index
optical isolator
optical length
optical logic
optical loss
optical microscopy
optical microswitch
optical mixer
optical path length
optical phase
optical power
optical power meters
optical region
optical return loss
optical SAR processor
optical satellite
optical scattering region
optical signal processing
optical signal to noise ratio
optical source
optical spectral attenuation
optical switching
optical taps
optical telegraph
optical telephone
Optical Time Domain Feflectomertry (OTDR)
optical time domain feflectrometry (OTDR) for attenuation measurement
optical tracking satellite
optical transistor
optical wavegudie
optical-guided-wave modulator equivalent circuit
optical/electronic{=O/E}

optimal (mmse) prediction of order N
optimal channel mapping
optimal control
optimal delay
optimal lattice weight
optimal transfer function
optimal weight value
optimal weight vector

optimum approximation of FIR filter
optimum bit allocation
optimum bit rate
optimum code
optimum coding
optimum communication system
optimum linear filtering
optimum linear prediction
optimum multiplication factor
optimum prediction
optimum profile
optimum receiver
optimum step aize in one-bit quantization
optimum step size in delta modulation
optimum step size in uniform quantization
optimum step size with transmission error
optimum traffic frequency
optimum transmission frequency
optimum working frequency

Optional
optional error
optional joint stereo coding method

optolectronic device
optolectronic integratd circuits

orbit
orbit assembled manned satellite
orbit control
orbit correction
orbit time

orbital antenna farm
orbital booster
orbital geophysical observatory satellite
orbital inclination
orbital period
orbital satellite seeker
orbital space station
orbital test satellite
Orbital Vehicle
orbital velocity

orbiting astronomical observation
orbiting craft
Orbiting Forg Othlith
orbiting geophysical observatory
orbiting satellite
Orbiting Solar Observatory
orbiting space station

orbit， parabolic
orbit， parking

order code
order of a field
order wire channel

orthogonal code
orthogonal FSK
orthogonal function
orthogonal polynomial
orthogonal representation
orthogonal signal
orthogonal transform
orthogonal vectors
orthogonal waveform

orthogonality
orthogonality of modes
orthogonality principle

orthomode coupler
orthomode transducer

orthonormal basis
orthonormal expansion
orthonormal function
orthonormal Q-matrix
orthonormal vectors

orthoronal error
orthoronal polarization

OSC (oscillator)
OSC (osscilloscope)

oscillation
oscillation (OSC)
oscillation frequency

oscillation， harmonic
oscillation， voerflow

oscillator nosie
oscillator synchronization

oscillator， backward-wave
oscillator， local
oscillator， magnetron
oscillator， master
oscillator， multiplecavity klystron

out of band
out-band diversity
out-band system
out-of-band frequency assignment
out-of-band input signal
out-of-band signaling
out-of-band superision
out-of-line coding
out-of-tone
out-phase

outer code
outer maker beacon
outer orbit
outer space
outer-space communication
outer-sync

outgoing carrier
Outgoing Connection Pending
Outgoing Disconnection Pending
outgoing frequency
outgoing network
Outgoing Recovery Pending
outgoing routine test
outgoing RQ' signal
outgoing secondary line switch
OutGoing Trunk (OGT)
outgoing α signal
outgoing β' signal

output
output channel
output error rate
output multiplexer
output network
output power
output processing
output SNR
output system

outside broadcasting
outside diameter
outside transmitter
outside vapor deposition process consoildation step
outside vapor deposition process deposition rate
outside vapor deposition process fluorine doping
outside vapor deposition process GeO2 incorporation
outside vapor deposition process sintering
Outside Vapor Phase Oxidation (OVPO)

Over The Horizon{=OTH} radar
over-reach interference
over-the-horizon communication

overall bandwidth
overall distortion
overall efficiency
overall loss

overflow
overflow bit
overflow rate
overflow trafic

overlap-add convolution method
overlap-save convopution method

overload
overload amplitude
overload distortion

overmoded born antenna
overmoded horns

oversea broadcast
oversea transmission

oxygen absorption
oxygen absorption bands
oxygen attenuation

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