Simulation Framework for a 3-D High-Resolution Imaging Radar at 300 GHz with a Scattering Model Based on Rendering Techniques

Abstract

We present a simulation framework for a 3-D highresolution imaging radar at 300 GHz with mechanical scanning. This tool allows us to reproduce the imaging capabilities of the radar in different setups and with different targets. The simulations are based on a ray-tracing approximation combined with a bidirectional reflectance distribution function (BRDF) model for the scattering of rough surfaces. Moreover, we present a novel approach to estimate the scattering parameters of the BRDF model for different types of targets from the combination of the radar data and information obtained from an infrared structure light sensor. This new framework will serve as a baseline for the design of future radar multistatic configurations and to generate synthetic data to train automatic target recognition algorithms.

Generalized Radar Range Equation Applied to the Whole Field Region

“…For traditional monostatic radar systems, the radar range equation is given as [23] There have been several studies on THz radar systems [11,12]. Cooper developed a 580 GHz radar by employing frequency-modulated continuous wave (FMCW) radar technique and presented a 675 GHz radar with 28.8 GHz bandwidth, which can detect objects concealed underneath clothing [13][14][15]. The mechanical translation method of the transceiver is used to provide a THz radar with refocusing capabilities, which leads to very good imaging quality at the range from 12.5 m to 37.5 m [16].…”

Simulation for embedded-defects foam terahertz images of active bifocal terahertz imaging system at 0.22 THz based on geometric optics

“…In the THz band, the scattering characteristics of rough surfaces have been measured and calculated [8,9] . Based on ray tracing, the bidirectional reflectance distribution function has been used to simulate THz image of human body with rough surface [10] . A physical optics-based THz imaging simulator simulates the THz images of metal plates and mannequins [11] .…”