Simulation of air‐to‐ground ranging mode of airborne monopulse radar over complex terrain

Rim, Jae-Won; Koh, Il‐Suek; Song, Jong-Hwa

doi:10.1049/iet-rsn.2020.0180

Cited by 2 publications

(11 citation statements)

References 20 publications

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“…선행 연구에서 제안하는 방법을 이용해 지표면으로 부 터 반사된 신호의 모노펄스 신호를 계산한다 [3], [15], [16] . 기 상클러터와 같은 방법으로 펄스 간 상관관계 및 항공기 도플러 효과도 고려할 수 있다.…”

Section: -2 지표면 시뮬레이터unclassified

“…Ⅰ. 서 론 날씨, 재원 등 여러 요소에 의해 제한을 받는 실제 실 험의 어려움으로 항공기에 탑재된 X 밴드 레이다의 공대 지 신호를 획득하는 방법은 주로 시뮬레이션 위주로 연 구되고 있고, 이는 다양한 응용 분야에서 사용되고 있다 [1]∼ [3] . 시뮬레이션으로 수신 신호를 모의 시, 다양한 운영 상황 을 고려해야 하며 또 모사된 신호의 정확도를 높이는 것 이 중요하다.…”

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Airborne Monopulse Radar Echo Signal Generation from Surface Clutter Including Weather Clutter Effect

Choi¹,

Koh²,

Jung³

2022

J. Korean Inst. Electromagn. Eng. Sci.

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An airborne radar echo signal includes signals returned from clutter and a target; thus, simulating the signal from the clutter may be crucial for predicting and analyzing accurate radar performance. Because it can be extremely difficult and expensive to obtain real measured signal data for various scenarios, an accurate signal generation method is required. Existing weather clutter and ground clutter simulators for an X-band airborne radar are combined to simulate the echo signal when two clutters exist simultaneously. The weather clutter effect becomes more significant with increasing frequencies, such as in the X-band. The proposed simulator can generate time-domain signals by considering the random characteristics of the clutter signal and the Doppler effect caused by the movement of aircraft and clutter. In addition, a simple scheme is proposed for generating signals from artificial structures. Finally, the finite bandwidth of the transmitted chirp signal is calculated to improve the accuracy of the generated signal.

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Section: -2 지표면 시뮬레이터unclassified

unclassified

Airborne Monopulse Radar Echo Signal Generation from Surface Clutter Including Weather Clutter Effect

Choi¹,

Koh²,

Jung³

2022

J. Korean Inst. Electromagn. Eng. Sci.

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“…To calculate the echo signal from the targets at a chirp duration, first, the lit and shadow regions on the target surface are determined based on the incident angle of the radar signal on the target and the normal vector (n ) of each triangular facet. A complete determination of the shadow regions requires a very long computation time, but this simple method can generate a relatively accurate backscattering for a radar application [7]. Fig.…”

Section: Scenario and Generation Of A 1d Time-domain Signalmentioning

confidence: 99%

“…Because it is based on the surface current of the objects, the object shape can be considered in a simpler fashion than the GO scheme. The iterative PO scheme is proved to be accurate, yet it entails a time-consuming computation [7]. To estimate the time-domain echo signal from dynamic targets, the RF specifications of the vehicle radar should be considered in detail, including frequency, polarization, chirp rate, bandwidth, and radar operations, such as frequency-modulated continuous wave (FMCW) radar.…”

Section: Introductionmentioning

confidence: 99%

“…Because the operating frequency of the vehicle radar is very high, the mesh number for the discretization of the target is very large, which limits the choice of the electromagnetic scattering calculation method [12,13]. Recently, a numerical scheme has been proposed to compute the time-domain echo signal from a large target for an airborne radar system [7,14]. The scheme adopts coherently integrated signals from the meshes inside an identical resolution bin.…”

Section: Introductionmentioning

confidence: 99%

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Efficient Algorithm to Calculate a Time-Domain Echo Signal from Moving Targets Based on Physical Optics and the Application to an Autonomous Driving Simulation

Choi

Koh

2021

J Electromagn Eng Sci

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An automotive radar simulator is proposed that can consider a dynamic driving scenario. The impulse response is computed based on the distance between the radar and the mesh position and the radar equation. The first-order physical optics technique is used to calculate the backscattering by the meshes, which can efficiently consider the shape of the target; however, because the radar operating frequency is very high, the required amount of mesh for discretization is large. Hence, the calculation of the time-domain echo signal requires considerable computational time. To reduce this numerical complexity, a new scheme is proposed to accurately approximate the time-domain baseband signal generated by the large number of meshes. The radar adopts the frequency modulated continuous waveform. Range-Doppler processing is used to estimate the range and relative velocity of the targets based on which simulation results are numerically verified for a driving scenario.

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Simulation of air‐to‐ground ranging mode of airborne monopulse radar over complex terrain

Cited by 2 publications

References 20 publications

Airborne Monopulse Radar Echo Signal Generation from Surface Clutter Including Weather Clutter Effect

Airborne Monopulse Radar Echo Signal Generation from Surface Clutter Including Weather Clutter Effect

Efficient Algorithm to Calculate a Time-Domain Echo Signal from Moving Targets Based on Physical Optics and the Application to an Autonomous Driving Simulation

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