Modelling and Performance Evaluation of Ground based Monostatic Radar Surveillance System

Communications on Applied Electronics Pub Date : 2019-05-29 DOI:10.5120/CAE2019652822

A. Bassey, B. Akaninyene, M. Kufre.

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Abstract

The modelling and performance evaluation of ground based monostatic radar surveillance system presented in this paper is analysed in terms of system performance results, input data of the radar system and its operating mode. Radar equations are derived to obtain the minimum detection signal (Pmin), system loss (Lsys), minimum signal-to-noise ratio (SNR)min and maximum detection range equation (Rmax) respectively. Radar parameters such as transmit peak power (Pt), antenna gain (G), radar cross section (RCS), bandwidth (B), and other parameters are analysed in the radar equations. Radar system losses (Lsys) are accounted into the modified radar equations and calculated to be 21.1 dB. The modified radar equations with Pt = 15 kW, and Rmax = 500 km, also gives a significantly lower value of SNR = 27.0 dB. Analysing the radar performance, MATLAB simulation program is used to evaluate the radar performance equations with different parameter values. Target detection radar signal is a difficult problem when the SNR is low, thereby causing the constant false alarm rate (CFAR) processor to adjust threshold. Simulation results are presented respectively.

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陆基单基地雷达监视系统建模与性能评估

从系统性能结果、雷达系统输入数据和工作模式等方面分析了地面单基地雷达监视系统的建模和性能评估。导出雷达方程，分别得到最小探测信号(Pmin)、系统损耗(Lsys)、最小信噪比(SNR)min和最大探测距离方程(Rmax)。在雷达方程中分析了发射峰值功率(Pt)、天线增益(G)、雷达截面(RCS)、带宽(B)等雷达参数。将雷达系统损耗(Lsys)计入修正后的雷达方程，计算得到21.1 dB。修正后的雷达方程Pt = 15 kW, Rmax = 500 km，信噪比也显著降低，为27.0 dB。对雷达性能进行了分析，利用MATLAB仿真程序对不同参数值下的雷达性能方程进行了求解。当信噪比较低时，雷达信号的目标检测是一个难题，从而导致恒虚警率(CFAR)处理器调整阈值。分别给出了仿真结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Communications on Applied Electronics

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