BIG CAT 300

ULTIMATE VERSATILITY FOR HIGH-DEMAND MISSIONS

Designed as an ESPA-class satellite for a half-plate payload adaptor, the BIG CAT 300 is engineered from our flight-proven, in-house modules. It delivers a versatile architectural foundation to accommodate your unique mission needs.

Built to Endure Equip your mission for the long haul. Featuring standard, fully redundant, and radiation-tolerant avionics, the BIG CAT 300 is designed for operations with a lifespan of up to 7 years across LEO, MEO, and GEO. Its robust architecture adheres to ECSS guidelines, featuring advanced mitigations for single-event effects to ensure mission security.

Mission-Ready Power The platform’s flexible electrical power system provides multiple conditioning options, delivering a continuous orbital average power of 160 W – and surging to over 500 W at peak performance. Options for body-mounted, single, or double deployable solar panels match power capture to your mission requirements.

Seamless Precision & Propulsion 3-axis attitude control offers pointing knowledge of < 16 arcsec using star trackers across multiple default pointing modes, supported by star trackers, fine sun sensors, and gyroscopes. Uniquely designed to accommodate both chemical and electrical propulsion systems, the BIG CAT 300 is fully primed for rapid orbit transfers, agile maneuvering, and proactive collision avoidance.

Intelligent Data & Connectivity Data flows through a standard CAN with CSP 2.0 avionics communication layer, integrated with RS-422 and high-speed interfaces like Ethernet, LVDS, and SpaceWire. Baseline S-band RF secures your critical link to the ground segment, while available X- and Ka-band options facilitate speedy payload data downloads. Alternative data interfaces are always available on demand.

Specifications

PLATFORM SPECIFICATION

REDUNDENCY

Dual-redundant avionics and AOCS
Multiple independent OBC cores
Redundant CAN buses & communication interfaces
Distributed power paths for fault-tolerant operation

POWER OPTIONS

28 V unregulated bus 
18 V regulated bus 
12 V regulated bus 
5 V regulated bus

PLATFORM MASS

Up to 190 kg

REFERENCE DESIGN ORBITS

LEO, MEO, GEO

LIFETIME

Up to 7 years

S-BAND RF UPLINK

2025-2110 MHz

S-BAND RF DOWNLINK

2200-2290 MHz, up to 10 Mbps

ATTITUDE CONTROL SYSTEM

3-Axis active determination and control
Absolute knowledge error: <1 degree (< 16 arcsec with star trackers)
Absolute pointing error: <2 degrees (< 100 arcsec with star trackers)
Pointing modes: nadir, sun tracking, target tracking, orbit pointing, ECI pointing

GPS

Position accuracy: 2.0m 
Velocity accuracy: 0.1m/sec 
Time accuracy: 5ns 

PROPULSION

Chemical and electrical

SECURITY

256 bit encryption on uplink and downlink

SPACE DEBRIS MITIGATION

Compliant with applicable space debris mitigation requirements, including controlled or natural de-orbit within required post-mission lifetime.

PAYLOAD SPECIFICATION

PAYLOAD MASS

Up to 110 kg

PAYLOAD ENVELOPE

W:45 x L:100 x H:60cm

PAYLOAD POWER

Up to 160 W continuous orbital average power
More than 500 W peak

STANDARD PAYLOAD INTERFACES

CAN bus
RS-422 point-to-point
LVDS point-to-point or multidrop
SpaceWire
Provision of PPS timing signal
Payload temperature telemetry

PAYLOAD DATA STORAGE

4 GB SLC flash-based file system storage with EDAC
2 x 256 GB pSLC flash-based data storage on SATA interface

MAXIMUM READ/WRITE RATE

Up to 1Gbps with Ethernet

OPTIONAL UPGRADES

X-BAND

Frequency: 8.025 - 8.4 GHz

KA-BAND

Frequency: 7.8 - 20.2 GHz 

SOLAR PANEL CONFIGURATION

Single deployable
Double depoloyable

SOLAR ARRAY DRIVING MECHANISM

Options available

STAR TRACKERS

< 16 arcsec attitude knowledge
Single, double, or 3-axis configuration

Let's talk about progress

We’re always ready for a talk about your project needs. Please write in detail what you are looking for and we’ll schedule a meeting with you where we can discuss all the details.