IoSiS

Early Warning Radar

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Figure 1: IoSiS Site in Weilheim (Germany) (47°52’51,4" N 11°04’54.5" E)© 2019 Deutsches Zentrum für Luft- und Raumfahrt

Basic Information

Name

IoSiS

Designation

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Alternate Designation

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Equipment Type

Early Warning Radar

Manufacturer

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Date of Introduction

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Description

The IoSiS (Imaging of Satellites in Space) is an experimental X-band early warning radar operating at 10.2 GHz, designed for imaging satellites in Low Earth Orbit (LEO). It features a large 9-meter Cassegrain antenna that functions as both a target tracking and illuminating radar for a planned swarm of passive, bistatic receiving antennas, each with a 1.8-meter reflector. The system currently includes two operational receive channels positioned on either side of the main Cassegrain antenna, and its 8 kW peak power (500 W average power) is generated by a traveling wave tube (TWT) with a bandwidth of approximately 4.4 GHz. This experimental radar was developed to practically demonstrate the application of the Inverse Synthetic Aperture Radar (ISAR) method for satellite tracking, offering a range resolution of 34 mm with a pulsewidth of up to 50 µs.

Technical Characteristics

frequency 10.2 GHz (X band)

pulsewidth (τ) ≤ 50 µs

peak power 8 kW

average power 500 W

range resolution 34 mm

Details

Category Air Defense Radars

Land > Radars > Air Defense Radars

Sources

radartutorial.eu: https://www.radartutorial.eu/19.kartei/01.oth/karte024.en.html

Classification

Domain

Ground

Equipment Status

Active

Dimensions

Length

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Width

9 m

Height

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Weight

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