Non-Gaussian clutter characterization applied to OTHR using a mixture of two Rayleigh probability density functions

Gustafson, Steven C.; James, Evan A.; Terzuoli, A.J.; Weidenhammer, Lindsay N.; Barnes, Rod I.

doi:10.1016/j.asr.2008.08.023

Cited by 2 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Radar stands for the "Radio Detection and Ranging", first patented by Christian Hulsmeyre in Germany (1904). [48][49][50] Radar systems were developed during World War II and their advance continues to the present day. The operating principle of a radar is to send electromagnetic energy pulses in the direction of the target.…”

Section: Radar Stealthmentioning

confidence: 99%

Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

Kim,

Lee,

Zhang

et al. 2023

Advanced Science

View full text Add to dashboard Cite

Stealth technology is used to enhance the survival of military equipment in the field of military surveillance, as it utilizes a combination of techniques to render itself undetectable by enemy radar systems. Radar absorbing materials (RAMs) are specialized materials used to reduce the reflection (or absorption) of radar signals to provide stealth capability, which is a core component of passive countermeasures in military applications. The properties of RAMs can be optimized by adjusting their composition, microstructure, and surface geometry. Carbon‐based materials present a promising approach for the fabrication of ultrathin, versatile, and high‐performance RAMs due to their large specific surface area, lightweight, excellent dielectric properties, high electrical conductivity, and stability under harsh conditions. This review begins with a brief history of stealth technology and an introduction to electromagnetic waves, radar systems, and radar absorbing materials. This is followed by a discussion of recent research progress in carbon‐based RAMs, including carbon blacks, carbon fibers, carbon nanotubes, graphite, graphene, and MXene, along with an in‐depth examination of the principles and strategies on electromagnetic attenuation characteristics. Hope this review will offer fresh perspectives on the design and fabrication of carbon‐based RAMs, thereby fostering a deeper fundamental understanding and promoting practical applications.

show abstract

Section: Radar Stealthmentioning

confidence: 99%

Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

Kim,

Lee,

Zhang

et al. 2023

Advanced Science

View full text Add to dashboard Cite

show abstract

“…In particular, target detection with multiple-input-multiple-output radar in non Gaussian and heterogeneous clutter was carried out in [21], by using the generalized likelihood ratio test-linear quadratic (GLRT-LQ) detector. In [22], the authors specified and demonstrated a practical technique for characterizing non-Gaussian clutter using Over The Horizon Radar (OTHR) data. A priori knowledge of non-Gaussian clutter has been used in [23] in order to improve the detection performance when the secondary data are limited.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Waveform Design with Multipath Exploitation Radar in Heterogeneous Environments

et al. 2021

View full text Add to dashboard Cite

The problem of detecting point like targets over a glistening surface is investigated in this manuscript, and the design of an optimal waveform through a two-step process for a multipath exploitation radar is proposed. In the first step, a non-adaptive waveform is transmitted anda constrained Generalized Likelihood Ratio Test (GLRT) detector is deduced at reception which exploits multipath returns in the range cell under test by modelling the target echo as a superposition of the direct plus the multipath returns. Under the hypothesis of heterogeneous environments, thus by assuming a compound-Gaussian distribution for the clutter return, this latter is estimated in the range cell under test through the secondary data, which are collected from the out-of-bin cells. The Fixed Point Estimate (FPE) algorithm is applied in the clutter estimation, then used to design the adaptive waveform for transmission in the second step of the algorithm, in order to suppress the clutter coming from the adjacent cells. The proposed GLRT is also used at the end of the second transmission for the final decision. Extensive performance evaluation of the proposed detector and adaptive waveform for various multipath scenarios is presented. The performance analysis prove that the proposed method improves the Signal-to-Clutter Ratio (SCR) of the received signal, and the detection performance with multipath exploitation.

show abstract

Non-Gaussian clutter characterization applied to OTHR using a mixture of two Rayleigh probability density functions

Cited by 2 publications

References 7 publications

Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

Carbon‐Based Radar Absorbing Materials toward Stealth Technologies

Adaptive Waveform Design with Multipath Exploitation Radar in Heterogeneous Environments

Contact Info

Product

Resources

About