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SL satellite terminal direction finding & jamming system

Closed‑loop detect‑locate‑jam system for LEO satellite terminals. It detects, geolocates and suppresses unauthorized Ku‑band satellite uplink terminals.

Starlink Terminal Direction Finding Targeted Jamming
SL satellite terminal direction finding & jamming system scene diagram: ground DF‑jamming unit, LEO satellite, ground satellite terminal, signal‑coverage zone.

Overview

SL satellite terminal direction finding & jamming system. This integrated RF counter‑measure system targets LEO satellite ground terminals. It captures Ku‑band uplink signals, performs multi‑node TDOA geolocation and executes intelligent jamming suppression. Suitable for border defense, critical‑site security and tactical mobile missions to mitigate risks brought by unauthorized satellite communications.

Highlight Features

Ku‑Band Uplink Signal Capture Detects OFDM burst uplink signals within 14.0‑14.5 GHz for illegal satellite‑terminal early‑warning.
Multi‑Node TDOA Geolocation GPS / BeiDou time‑synchronized nodes; achieves DF bearing accuracy below 3°, TDOA positioning error under 50 m.
Three Selectable Jamming Modes Broadband area denial, single‑target selective jamming, guided beam‑steering directional suppression.
Closed‑Loop Real‑Time Feedback Continuously monitors uplink spectrum during jamming, auto‑adjust power and beam until ≥85 % suppression‑rate is confirmed.
Map‑Based Visual Operation Geospatial display for bearing / position results, supports historical‑event logging and real‑time alarm triggering.
Multi‑Scenario Deployment Supports tripod, vehicle‑mounted and shipborne installation for border, port and critical‑site protection missions.
Lightweight Integrated Hardware Compact dome‑style DF unit; combined receive‑and‑jam host with rotary azimuth platform for outdoor waterproof operation.
Signal‑Characteristic Extraction Automatically parse frequency, power and modulation parameters of captured satellite‑terminal burst signals.

Working Principle

Detect‑Locate‑Jam closed‑loop workflow.

Time‑synchronized multi‑node units capture Ku‑band uplink bursts from ground satellite terminals, and calculate target coordinates via TDOA direction‑finding algorithm.

After extracting signal features, the system outputs interference on satellite downlink band. Operators can select broadband, selective or guided directional jamming modes.

It continuously monitors uplink spectrum and dynamically adjusts jamming parameters to reach ≥85 % suppression rate. Real‑time status is delivered to the operation terminal.

System Components

Direction‑Finding Sub‑System: Integrated DF dome host (antenna + signal processor), GPS‑BeiDou timing module, supporting tripod / vehicle / ship mounting. Responsible for uplink signal measurement, TDOA sampling, multi‑node positioning and real‑time alarming.

Jamming Suppression Sub‑System: All‑in‑one jamming host with receiving front‑end, RF jammer unit and 360° rotary platform. Executes signal‑feature extraction and outputs broadband / selective / guided directional jamming.

Operation Control Terminal: Provides map visualization, historical‑data management, mode switching and equipment self‑diagnosis functions for operators.

Specifications

Key Brief Parameters

  • DF Receive Band: 14.0‑14.5 GHz Ku‑band uplink; Jamming transmit band: 10.7‑12.7 GHz downlink
  • DF Accuracy: Bearing < 3°, TDOA positioning accuracy < 50 m (≥3‑node deployment)
  • Effective Jamming Distance: Up to 3 km, suppression rate ≥ 85 %
  • Deployment: Tripod / vehicle‑mount / ship‑borne; DF‑dome max 6 kg, jamming host max 25 kg, waterproof outdoor‑grade
  • Synchronization: GPS + BeiDou time synchronization for multi‑node TDOA calculation