Results 221 to 230 of about 23,415 (245)

A pulse doppler radar using reconfigurable computing

7th International Multi Topic Conference, 2003. INMIC 2003., 2005
In a variety of signal processing applications, nowadays, the use of radar for advanced control has become a necessity, e.g., navigational systems, aircraft, automobiles and other sensing devices. A normal microprocessor based radar signal processor eats a lot of processing power and time so we have proposed the implementation of a dynamically ...
S. Sumeem, M. Mobien, M.I. Siddiqi
openaire   +1 more source

Assessment of Pulse-Doppler Radar and Digital Beamforming Radar

2018
In radar domain, digital beamforming radar is evolving as a promising radar technology as compared to conventional pulse-Doppler radar. The design of PD radar and DBF radar is done by keeping all the design parameters same, and its performance is compared in this work.
Nima Donka Tamang, Samarendra Nath Sur, Soumyasree Bera, Rabindranath Bera   +3 more
openaire   +1 more source

Detection Range Predictions for Pulse Doppler Radar

Proceedings of the IRE, 1961
A mathematical model of sufficient flexibility to describe most pulse Doppler radar search systems is constructed and used to predict detection ranges. It is applicable to situations where thermal noise and/or sidelobe clutter limits detection range. The sidelobe clutter is assumed to be statistically similar to thermal noise.
S. Meltzer, S. Thaler
openaire   +1 more source

Atmospheric Measurements by VHF Pulsed Doppler Radar

IEEE Transactions on Geoscience Electronics, 1979
In the past decade the technique of using sensitive Doppler radars to measure wind, turbulence, and stability in the free atmosphere has been developed. Because this technique can be used to study the atmosphere at all heights from near the ground up to about 100 km, it has been named the MST (mesosphere-stratosphere-troposphere) radar technique ...
John L. Green, Kenneth S. Gage, Thomas E. Van Zandt   +2 more
openaire   +1 more source

Clutter mapping for airborne pulse Doppler radar

IET Seminar on Radar Clutter Modelling, 2008
This paper presents a quick and simple method to model the surface clutter map of an airborne radar operating in a medium pulse repetition frequency (PRF) mode and in a look-down scenario. The basic model derives a clutter map in the range/velocity detection space of the radar specific to each PRF used within the radar schedule.
C.M. Alabaster, E.J. Hughes
openaire   +1 more source

Low IF demodulation for physiological pulse Doppler radar

2014 IEEE MTT-S International Microwave Symposium (IMS2014), 2014
Quadrature receivers are employed in Doppler radar vital sign sensing to overcome position sensitivity issue of single channel receivers. However, quadrature architecture adds to the complexity of the system, and any imbalance between the two channels can introduce significant error in measurements.
Ehsan Yavari, Olga Boric-Lubecke
openaire   +1 more source

PRF set selection for pulse-Doppler radars

IEEE Region 5 Conference, 1988: 'Spanning the Peaks of Electrotechnology', 2003
The principles of medium PRF (pulse-repetition-frequency) radar and the specific requirements of a radar system place restrictions on the choice of these PRFs. The author documents typical constraints placed on a pulse-Doppler search-mode PRF set. He sets forth an efficient approach for selecting a near-optimum set. Finally, as an example, a PRF set is
openaire   +1 more source

Historical Justification for Pulse Doppler Radar

2012
A pulse Doppler radar is the result of combining Doppler sensing techniques with pulsed radar operation. Such radars offer the powerful scope for direct measurements of both target range and velocity, even in the face of large clutter returns and even in the presence of chaff or other interference.
openaire   +1 more source

Clutter simulation for airborne pulse-Doppler radar

2003 Proceedings of the International Conference on Radar (IEEE Cat. No.03EX695), 2004
A method is described for sampling the surface clutter seen in the receiver of an airborne pulse Doppler radar. The clutter return is modelled as a two dimensional Gaussian random field with uncorrelated increments and is characterised by the mean clutter power of the field.
openaire   +1 more source

High Pulse Repetition Frequency Pulse Doppler Radar

2012
Pulsed radars that are not required to be Doppler sensing systems have traditionally employed low pulse repetition frequency (PRF) waveforms. A low PRF is defined as one which is sufficiently low so as to avoid range ambiguities. To avoid range ambiguity, the maximum detection range of the radar for all target and clutter returns is required not to ...
openaire   +1 more source