• Title/Summary/Keyword: AESA Scanning Radar

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Dwell Time Optimization of Alert-Confirm Detection for Active Phased Array Radars

  • Kim, Eun Hee;Park, JoonYong
    • Journal of electromagnetic engineering and science
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    • v.19 no.2
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    • pp.107-114
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    • 2019
  • Alert-confirm detection is a highly efficient method to improve phased array radar search performance. It comprises sequential detection in two steps: alert detection, in which a target is detected at a low detection threshold, and confirm detection, which is triggered by alert detection with a longer dwell time to minimize false alarms. This paper provides a design method for applying the alert-confirm detection to multifunctional radars. We find optimum dwell times and false alarm probabilities for each alert detection and confirm detection under the dual constraints of total false alarm probability and maximum allowable dwell time per position. These optimum values are expressed as a function of the mean new target appearance rate. The proposed alert-confirm detection increases the maximum detection range even with a shorter frame time than that of uniform scanning.

A Study on Design and Analysis of an Alert-Confirm Detection Method (Alert-Confirm 탐지 방식의 설계 및 성능 분석에 관한 연구)

  • Eunhee Kim;Hyunsu Oh;Sawon Min
    • Journal of the Korea Institute of Military Science and Technology
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    • v.27 no.2
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    • pp.140-146
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    • 2024
  • Active electronically scanning antennas are faster and more flexible in beam-scheduling than mechanical antennas. Thus, they require an advanced resource management or detection methods to operate efficiently. In a surveillance radar performing periodic detection, alert-confirm detection is an excellent method to improve the cumulative detection probability by reducing the period while maintaining the detection probability. This paper proposes a design method for alert-confirm detection based on the parameters of the conventional design. We developed a simulator based on simulink@matworks and verified the result through Monte Carlo simulation.