Results 261 to 270 of about 147,753 (299)
Some of the next articles are maybe not open access.
Noise vs. Deterministic Waveform Radar—Possibilities and Limitations
IEEE Aerospace and Electronic Systems Magazine, 2020Classical radars use deterministic waveforms, such as linear frequency modulated pulses. Noise radars, on the other hand, use random waveforms, or waveforms that resemble random signals. The randomness of the signal provides certain advantages, such as limiting or avoiding range/velocity measurement ambiguity, or better resistance to jamming.
Mateusz Malanowski +3 more
openaire +1 more source
Through wall radar imaging using UWB noise waveforms
2008 IEEE International Conference on Acoustics, Speech and Signal Processing, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +1 more source
A compact, multichannel, and low noise arbitrary waveform generator
Review of Scientific Instruments, 2014A new type of high functionality, fast, compact, and easy programmable arbitrary waveform generator for low noise physical measurements is presented. The generator provides 7 fast differential waveform channels with a maximum bandwidth up to 200 MHz frequency.
S, Govorkov +3 more
openaire +2 more sources
Fractal characteristics for binary noise radar waveform
SPIE Proceedings, 2016Noise radars have many advantages over conventional radars and receive great attentions recently. The performance of a noise radar is determined by its waveforms. Investigating characteristics of noise radar waveforms has significant value for evaluating noise radar performance.
openaire +1 more source
Radar design using chaotic and noise waveforms
2006 International Waveform Diversity & Design Conference, 2006Theoretical and experimental evaluations of potential capabilities of Noise Radar Technology (NRT) in design and development of radar sensors are presented. Derivation of Ambiguity Function for Pulsed Noise Waveform is given. Theoretical basis for Noise Radar design and three different methods for coherent processing of Noise Radar returns are briefly ...
openaire +1 more source
Ka-band bistatic ground based noise-waveform-SAR
2008 International Radar Symposium, 2008The paper is devoted to design and testing of a reconfigurable Ka-band GB NW-SAR. Its design is based upon new synthetic aperture antennas and noise radar technology. Results of outdoor trials are presented for both SAR imaging and differential interfrometry measurements.
Konstantin A. Lukin +6 more
openaire +1 more source
Random Noise Radar/Sodar With Ultrawideband Waveforms
IEEE Transactions on Geoscience and Remote Sensing, 2007Random noise waveforms with ultrawide bandwidth improve the range resolution and reduces the probability of intercept in radar/sodar. As a result of the nonperiodic waveform, the range ambiguity is removed as well. By transmitting a sine signal that is phase or frequency modulated by random noise, autocorrelation functions with improved side lobe ...
openaire +1 more source
Power efficiency of high dynamic range noise waveform
2016 17th International Radar Symposium (IRS), 2016Noise radars — radars that use random waveforms as sounding waveforms — are prone to what is known as a masking effect. This occurs when the correlation sidelobes of a strong target echo masks weaker echoes. In order to overcome this limitation, the sounding signals which have correlation functions with suppressed sidelobes may be used.
Janusz S. Kulpa, Anna Kurowska
openaire +1 more source
Application of arbitrary waveform generator for noise radar
SPIE Proceedings, 2011The approach, when the waveforms of different types are exploited in the same radar (waveform diversity) requires new-generation sources of initial signals. For generating of different types of waveforms in the same radar we suggest using Arbitrary Waveform Generator, that allows output any type of pre-programmed signal in real time.
Konstantin A. Lukin +3 more
openaire +1 more source
Noise and distortion in transient waveform recorders
1988. IMTC-88. 5th IEEE Instrumentation and Measurement Technology Conference, 2003A data-acquisition system that measures transient waveform recorder (TWR) performance and has self-test capability is described. It uses an HP9836 desktop computer with 2 megabytes of RAM storage, a 30-megabyte hard disc and two floppy discs, a ten-bit TWR interfaced on an HPIB interface, and a CAMAC crate capable of housing up to four 12-bit 20-MHz ...
openaire +1 more source

