Ambiguity Function Analysis of Polyphase Codes in Pulse Compression RadarsIn a radar system pulse compression technique permits us to overcome the trade-off between long and short duration pulses. Long duration pulses are used for good detection whereas short duration pulses are used for better range...
Radar Nadav Levanon, in Encyclopedia of Physical Science and Technology (Third Edition), 2003 VII.D Frequency Resolution and the Ambiguity Function When the received signal is Doppler shifted, the input to the matched filter differs from the signal to which it was matched. The response of the ...
Description of the radar signal ambiguity function for application to the synthesis of the 2D radar image of an aircraft on the basis of spatial frequencies is proposed. Requirements on the time-frequency structure of the sounding signal are determined and the possibility of modeling this signal wit...
Because of all the peaks, this kind of ambiguity function is called a bed of nails ambiguity function. Stepped FM Waveform The linear FM waveform is very widely used in radar systems. However, it does present some challenges to the hardware. For one thing, the hardware has to be able to...
4.1 AMBIGUITY FUNCTION DEVELOPMENT Since the ambiguity function can be thought of as the response of a signal processor to a received radar waveform, this is the approach we take in deriving the ambiguity function. Let the transmitted waveform be represented by the base-band signal, . Recall ...
The ambiguity functions of a kind of direct chaotic radar system are investigated. In this radar system, a microwave chaotic Colpitts oscillator is employed to generate the source signal that is directly transmitted through a wideband antenna without modulation. The auto-ambiguity function of this rad...
The ambiguity functions of a kind of direct chaotic radar system are investigated. In this radar system, a microwave chaotic Colpitts oscillator is employed to generate the source signal that is directly transmitted through a wideband antenna without modulation. The auto-ambiguity function of this rad...
High acceleration of radar targets is analyzed using Acceleration Ambiguity Function (AAF). The acceleration resolution based on AAF is defined. The AAF and acceleration resolution of rectangle pulse signal are derivated and the conclusion that its acceleration resolution is in inverse proportion...
numericallycomputingtheambiguityfunctionusingtheFastFourierTransform(FFT).Thiswillallowgenerationofambiguityfunctionsofadvancedwaveformsandsignalprocessors.Sincetheambiguityfunctioncanbethoughtofastheresponseofasignalprocessortoareceivedradarwaveform,thisistheapproachwetakeinderivingtheambiguityfunction.Letthetransmittedwaveform...
—The ambiguity functions of a kind of direct chaotic radar system are investigated. In this radar system, a microwave chaotic Colpitts oscillator is employed to generate the source signal that is directly transmitted through a wideband antenna without modulation. The auto-ambiguity function of this ...