WARLOC: A high-power coherent 94 GHz radar

Linde, G.; Ngo, M.T.; Danly, B.G.; Cheung, W. J.; Gregers‐Hansen, V.

doi:10.1109/taes.2008.4655367

Cited by 63 publications

(14 citation statements)

References 15 publications

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“…11. This data was obtained using the NRL WARLOC 94 GHz millimeter wave radar [18] located at the NRL Chesapeake Bay Detachment close to Washington, D.C., with 12 knot winds and a sea state of 2-3. The radar was operating with 300 MHz FM pulses at a pulse repetition frequency (PRF) of 500 Hz and stretch processing was used, resulting in a range window of 200 m using a 20 MHz IF bandwidth after FM demodulation.…”

Section: Detection Of Targets In Sea Cluttermentioning

confidence: 99%

An Improved Empirical Model for Radar Sea Clutter Reflectivity

Gregers‐Hansen

Mital

2012

IEEE Trans. Aerosp. Electron. Syst.

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A fundamental characteristic of radar sea clutter, important for radar performance evaluations, is its apparent reflectivity defined as ¾ ± (m 2 =m 2 ). "Apparent" is used as a reminder that any measurement of sea clutter reflectivity includes the effects of propagation and shadowing close to the sea surface. Sea clutter reflectivity depends on many factors, including sea state, wind velocity, grazing angle, polarization, and radar frequency. An empirical sea clutter model proposed by Horst, et al. (1978), the so-called GIT model, has found widespread acceptance in the radar community. However, this model does not always agree with what is the most complete experimental database of sea clutter reflectivity available to the radar systems engineer. The 1991 edition of F. E. Nathanson's book provides seven tables of measured sea clutter reflectivity data summarized from approximately 60 sources. The large deviation between the GIT model and this database, in particular at lower sea states, has prompted NRL to develop an improved model for sea clutter reflectivity based on these tables. The model is a function of radar frequency, polarization, sea state, and grazing angle. The functional form of this empirical model was chosen such that the average absolute deviation (in dB) between the model and the experimental data was minimized.

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Section: Detection Of Targets In Sea Cluttermentioning

confidence: 99%

An Improved Empirical Model for Radar Sea Clutter Reflectivity

Gregers‐Hansen

Mital

2012

IEEE Trans. Aerosp. Electron. Syst.

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“…The Defense Advanced Research Projects Agency (DARPA) is also conducting a video synthetic aperture radar (ViSAR) program targeting this frequency band. At still lower frequencies, wide availability of commercial mm-wave components in the W-band (75-110 GHz) make this the highest frequency where radars are commonplace in the consumer market (e.g., automotive collision avoidance sensors), science (e.g., cloud sensing [16]), and security (e.g., personnel screening [17] and tracking/counter-stealth [18]). …”

Section: Submm-wave Radar Worldwidementioning

confidence: 99%

Submillimeter-Wave Radar: Solid-State System Design and Applications

Cooper

Chattopadhyay

2014

IEEE Microwave

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“…It operated at a frequency of 10 GHz that corresponded to the frequency of the main cyclotron resonance in the field of a solenoid cooled with flowing water. In subsequent years, gyroklystrons installed in cryomagnets [4,5] were developed for millimeterwave radar stations "RUZA" [2] and "WARLOC" [3].…”

Section: Introductionmentioning

confidence: 99%

Experimental studies of a gyroklystron operating in the field of a permanent magnet

Antakov

Gachev

Zasypkin

2011

Radiophys Quantum El

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621.385.69We have developed and tested a gyroklystron operating with the second harmonic of the electron cyclotron frequency at a frequency of 32.3 GHz in the field of a permanent magnet. In the twoand three-cavity versions of the gyroklystron, the peak power of the output radiation reached 320 kW with an efficiency of 30%, an amplification coefficient of 20-25 dB, and an operating frequency bandwidth of 0.05%. In the wide-band version of the gyroklystron, the amplification bandwidth was equal to 0.27% for an output power of 200 kW and an amplification coefficient of 13 dB.

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WARLOC: A high-power coherent 94 GHz radar

Cited by 63 publications

References 15 publications

An Improved Empirical Model for Radar Sea Clutter Reflectivity

An Improved Empirical Model for Radar Sea Clutter Reflectivity

Submillimeter-Wave Radar: Solid-State System Design and Applications

Experimental studies of a gyroklystron operating in the field of a permanent magnet

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