Siemens 1990
Secondary Surveillance Radar
Official Photo
Basic Information
Name
Siemens 1990
Designation
—
Alternate Designation
—
Equipment Type
Secondary Surveillance Radar
Manufacturer
Siemens Defence Electronics
Date of Introduction
—
Description
The Siemens 1990 is a Secondary Surveillance Radar (SSR) developed in Germany by Siemens Defence Electronics. Operating at 1030/1090 MHz, it was designed for both civil and military air traffic management and air defense systems, with its characteristics standardized by Eurocontrol. While largely retired, some military airfields continued to use it due to delays in the delivery of newer ASR-E radars from EADS. Key specifications include a peak power of up to 2 kW, an instrumented range of up to 250 nautical miles, and a range resolution of 500 meters.
Ground Specifications
Range
463.0 km
Technical Characteristics
frequency
1030 / 1090 MHz
pulse repetition time (PRT)
synchronuous to the primary radar
pulse repetition frequency (PRF)
synchronuous to the primary radar
pulsewidth (τ)
depending on mode
peak power
up to 2 kW
average power
up to 100 watts
instrumented range
up to 250 NM onmouseover="Tip(navi)" onmouseout="UnTip()">
range resolution
500 m
beamwidth
10 degrees
hits per scan
3 … 5
antenna rotation
synchronuous to the primary radar
Details
Country of Origin
Germany
Category
Secondary Surveillance Radars
Land > Radars > Secondary Surveillance Radars
Sources
radartutorial.eu: https://www.radartutorial.eu/19.kartei/14.ssr/karte006.en.html
Classification
Domain
Ground
Equipment Status
Active
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