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Spacecraft Communication Systems

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Ka-band Communication

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Operates in the frequency range of 26.5–40 GHz, offering higher data rates for space communication but with increased susceptibility to weather effects.

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X-band Communication

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Uses a segment of the microwave radio region of the electromagnetic spectrum. Offers a balance between data rate and beam width, suited for deep-space communication.

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Tracking and Data Relay Satellite System (TDRSS)

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A satellite network providing near-continuous communication links between the ground and low Earth orbit (LEO) spacecraft.

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Deep Space Network (DSN)

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A global network of large antennas and communication facilities that support interplanetary spacecraft missions.

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S-band Communication

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A part of the microwave band of the electromagnetic spectrum, used for near-Earth space communications, providing moderate data rates.

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Very Small Aperture Terminal (VSAT)

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A two-way satellite ground station with a dish antenna that is typically less than 3 meters in diameter. Used for remote mission control and data transfer.

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Low Earth Orbit (LEO) Satellite Communication

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Involves communication with satellites close to Earth (up to 2000 km altitude), which provides lower latency and requires lower signal strength.

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Radio Frequency (RF) Communication

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Uses electromagnetic waves in the RF spectrum for data transmission. Essential for Earth-spacecraft links and inter-satellite communications.

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Optical Communication

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Employs lasers to transmit data via light. Provides high data rates with less power and smaller equipment compared to RF.

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Ultra High Frequency (UHF) Communication

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Involves frequencies in the range of 300 MHz to 3 GHz. Primarily used for space-to-space and space-to-ground voice, telemetry, and radar.

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