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Space Solution Japanese Site NEC Online TV. Safegaurding the earth from space.
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NEXTAR

NEC advanced small satellite provides world-class remote sensing capabilities using newly developed standard bus system, which ensures High Reliability, Low Cost, Quick Delivery.
NEC revised the system architecture in order to achieve highly integrated and open system with adopting advanced COTS technology.

NEXTAR

NEXTAR ：　NEC Next　Generation　Star

Satellite Bus System

Advanced High Resolution Earth Observation Satellite Series


High Flexibility adaptable for various mission requirement

Technical Data

Core Bus Features

  - Bus dry mass :
200 kg
  - Payload mass capability :
200 kg max.
  - Payload power supply :
600 w max.
  - Life :
5 years

Telemetry and Command

  - Communication frequency :
S-band

Mission Data Handling

  - Data bus I/F :
Space Wire （IEEE 1355）
  - Data rate & storage :
200 Mbps, 4GB

Attitude Control

  - Control method :
3-axis, zero momentum
  - Control capability :
±6.6x10-2 deg

Power

  - Bus voltage :
50 V
  - Battery :
Li-ion
  - Solar Array :
TJ-GaAs cell

Propulsion (option)

Structure

  - Bus module dimension :
1 m x 1 m x 0.8 m
  - Module :
Bus / Mission separation

System Block Diagram


NEC Original Advanced Small Satellite Simulation Data

NEC Heritage of SAR Technology

Night view around Shizuoka-city by the PALSAR

 

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