Waves You Can't Surf (Signal Fundies)
Expensive Boxes With Lights (RF Equipment)
Lost Without GPS (PNT)
Talk to the Satellite, Not Me (SATCOM)
You Saw This Somewhere
Final Jeopardy
100
Made up of both an electric field (E) and a perpendicular magnetic field (H)
What is an Electromagnetic Wave?
100
An antenna that radiates /receives equally in "all" directions
What is an omnidirectional antenna?
100
Systems that provide global Position, Navigation and Timing (PNT).
What is Global Navigation Satellite Systems?
100
Wireless communication that utilizes satellites in orbit to transmit and receive signals between the ground stations and users
What is satellite communication?
100
Range of frequencies occupied by a signal.
What is bandwidth?
200
The rate at which something occurs or is repeated over a particular period of time.
What is Frequency?
200
An antenna with a beam that can be electronically steered without physical movement.
What is a phased array antenna?
200
The segment where telemetry is collected.
What is the control segment?
200
Acronym used for modulator and demodulator.
What is MODEM?
200
Natural reduction in signal strength.
What is Free Space Loss?
300
Can be in Linear (vertical or horizontal) or circular (Right Hand Circular (RHC) or Left Hand Circular (LHC)).
What is Polarization?
300
When the antenna polarization doesn’t match transmit antenna.
What is cross-polarization?
300
This code includes the spreading code, ranging measurement, and ID for each satellite.
What is the Pseudo Random Noise (PRN) Code?
300
When the user or ground station will transmit in one frequency and the satellite will convert the frequency via a set transponder translation factor (TTF) to a downlink frequency and transmit to the the receiving end.
What is bent pipe SATCOM?
300
Represents data through varying the “height” of a wave through power
What is Amplitude Modulation?
400
Continuous wave that is modulated.
What is a Carrier Wave?
400
Used to show optimal receive locations from the satellite to the Earth
What is G/T rings?
400
The primary frequency used by GPS for navigation and timing.
What is L1 1575.42 MHz?
400
When satellites can re-broadcast analog data from one satellite to another without the need of a repeater ground station.
What is crosslink?
400
The ratio of the preponderance of the carrier signal to the level the noise floor.
What is Signal-to-Noise Ratio?
500
A digital modulation technique where the phase of the carrier wave is changed in discrete steps to represent data.
What is Phase Shift Keying (PSK)?
500
Used to show optimal transmission locations from the Earth to the satellite
What is EIRP rings?
500
The number of satellites needed for a PNT solution.
What is 4 satellites?
500
All users share the same frequency channel, but transmit at different time slots in a repeating frame. The satellite switches rapidly between users.
What is Time Division Multiple Access (TDMA)
500
Uses redundant patterns (also called coding) in the data being transmitted so the receiver can infer what the original bits were transmitted from the sender
What is Forward Error Correction (FEC)?
500
What frequency band is represented on this spectrum?
Ku Band