Atmospheric Effects on Radar Target Identification and Imaging

Jeske, H.

doi:10.1007/978-94-010-1531-8

Cited by 9 publications

(3 citation statements)

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“…The radio waves also suffer propagation losses due to atmospheric absorption in addition to free space loss [34]. Atmospheric conditions, e.g., rain, hail, snow, and upper atmospheric conditions can directly affect the detection by radar [35]. The rain, hail, snow, fog, and other precipitation conditions can result in echoes from these particles that superimpose the target echoes.…”

Section: A Radio Waves Interaction With the Aerial Vehicles And Surro...mentioning

confidence: 99%

A Survey on Radar Techniques for Detection,Tracking, and Classification of Aerial Threats

Khawaja¹

2022

Preprint

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<p> The use of unmanned aerial vehicles (UAVs) for different applications has increased many folds in recent years. The UAVs are expected to change the future air operations. However, there are instances where the UAVs can be used for malicious purposes. The detection, tracking, and classification of UAVs is challenging compared to manned aerial vehicles (MAVs) mainly due to small size, complex shapes, and ability to fly close to the terrain and in autonomous flight patterns in swarms. In this survey, we will discuss current and future aerial threats, and provide an overview of radar systems to counter such threats. We also study the performance parameters of radar systems for the detection, tracking, and classification of UAVs compared to MAVs. Finally, limitations of radar systems and comparison with other techniques that do not rely on radars for detection, tracking, and classification of aerial threats are also provided. </p>

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Section: A Radio Waves Interaction With the Aerial Vehicles And Surro...mentioning

confidence: 99%

A Survey on Radar Techniques for Detection,Tracking, and Classification of Aerial Threats

Khawaja¹

2022

Preprint

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“…According to the electromagnetic theory, each scattering center (SC) is equivalent to a mathematical discontinuity in Stratton-Chu integrals [1]. From the view of geometrical structure, the positions of SCs correspond to the discontinuities of surface and specular points.…”

Section: Dear Editormentioning

confidence: 99%

Accurate scattering centers modeling for complex conducting targets based on induced currents

Xiao

Guo

et al. 2020

Sci. China Inf. Sci.

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“…However, we note that In case S, 0 S., i.e., ruclprocity of the propagation paths is violated, the definition of % (25) cannot, be used (Kanereykin et &1, 1966) as may be erncountered for a propagation path within a highly ionized cloud containing varlouý. dense liquid and sol id Ice states of hydrometeors (Jeske, 1976).…”

Section: P-arlazicn State Transformationmentioning

confidence: 99%

Basic Concepts of Radar Polarimetry and Its Applications to Target Discrimination, Classification, Imaging and Identification

Boerner¹

1982

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Polarizai:ion, radar polarimetry, target discrimination, classification, imaging, optimal polarization nulls, polarization transformation matrix, Mu.eller matrix, radar scattering ,%atrix, polarization fork.1;1-0. ASSTR ACT (Continue on rova. old. It A4 -at *orny and Odonaltli by block "Wob".1IInI meticulous detail, a su~cinct sunimary of basic electromagnetic wave polarization descriptors, of' the various scatterer polarization transformation and of the scatterer descriptive operators is introduced. It is then shown how 'the five (5) independeutt ma\vrix parameter for the relative phase monostati-scattering matrix de~scrib.'ng an isolated, yet regionally distributed, target in a reciprocal propagatiov medium can be recovered from (i) amplitude-. only, (ii) mixed amplitude plus pai'tial phase, (iii) complete two-step (Cont'd) 20.ABSTRACT amplitude-phase measurements. Basic properties of the radar target scattering matrix for linear (H, V) and circular (R, L) polarization basis Pre described in terms of geometrical target features as functions of the specular point surface coordinate parameters, known as gaussian principal, main and related curvature functions.Based upon this succinct background introduction on radar polarimetry, the concepts are applied mainly for the coherent case to various classes of increasing order of sophistication, as defined in detail in the INTRODUCTION, to the problem of radar target handling for the noa-cooperative, limited-data case. ff.j- ABSTMRCTIn meticulous detail, a succinct summary of b~asic electromagnetic wave polarization deiscriptors, of the various scatterer polarization transformation matrces, and its Invariants of the associated optimal matrix polarizatlkons, ane of' the scatterer descriptive operators In Introduced, It Is then show~n holmw thf. five (5) Ir-dependent matrix parametr~r for the relat~iv% phase mora-static .iattcring matrix. cescrlbing an~ Isolated, ;et relilonally dls'ributud, t.arget In a revciprocal prdIpagt,.tion medium can be/#rer~overed from (1) amplituda-only, 01i) minxed ainpiltu(ce pium~ partial phase., (il1) c;omplete t-wc-ate,ý a3;Pplltude-I phetse roIeasure~menti", Ba,,ic prope'rti-es of the radiar target catri:g matrix forĩ llnear' (H, V) and r'1rcular (R, L) polarrizva.tion basis are desccrbe~d in terms o"'. cttimetrical 1argetdie,-tures as functions of the specular polr-. 5.urface coordin~ate parameters, Vnown ill gausslao principal, main and related cuivature functlor),. Based upon this suci:inct background Introduction on radar polarimetry, the concepts-are applie.d mainly fur thie zoherent case to variou~j classes of 7rncreas-Ing order of sophistication, as defined In detail In the 1147KODUCTIONi, 4o the problem of radar target handling~ for the non-ccaperative, ilimited-dat'A case.l.

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Atmospheric Effects on Radar Target Identification and Imaging

Cited by 9 publications

References 0 publications

A Survey on Radar Techniques for Detection,Tracking, and Classification of Aerial Threats

A Survey on Radar Techniques for Detection,Tracking, and Classification of Aerial Threats

Accurate scattering centers modeling for complex conducting targets based on induced currents

Basic Concepts of Radar Polarimetry and Its Applications to Target Discrimination, Classification, Imaging and Identification

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