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linear frequency modulation

Analysis of Non Linear Frequency Modulation (NLFM) Waveforms for Pulse Compression Radar

Analysis of Non Linear Frequency Modulation (NLFM) Waveforms for Pulse Compression Radar

... of frequency modulated pulse compression technique in which sweep rate is not restricted to a constant as compared to the ...The frequency of each stage is swept linearly through the given time ...TSPW ...

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Pulse Compression of Linear Frequency Modulation Signals in Presence of Phase Truncation

Pulse Compression of Linear Frequency Modulation Signals in Presence of Phase Truncation

... With the emergence of pulse compression technology, LFM signals have been playing an important role in radar systems. LFM waveform generation schemes are classified in analog and digital techniques [1]. With the ...

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Simulation of Spread Spectrum Radar Using Rake at the Receiver End

Simulation of Spread Spectrum Radar Using Rake at the Receiver End

... Patented RADAR technologies are now available that has major advantages eliminating the most of the disadvantages of either pulse or continuous wave approaches. Those are based on the use of a digital pseudo-random ...

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Side-Lobe Jamming Based on Digital Channelization

Side-Lobe Jamming Based on Digital Channelization

... Linear frequency modulation (LFM) signal is widely adopted in modern radar. Thus, LFM radar jamming is an important issue in electronic counter measures (ECM) [1]. Noncoherent noise jamming tends to ...

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A Strip-Map SAR Coherent Jammer Structure Utilizing Periodic Modulation Technology

A Strip-Map SAR Coherent Jammer Structure Utilizing Periodic Modulation Technology

... Abstract—After being modulated by a periodic signal, the pulse compression result of the modulated LFM (Linear Frequency Modulation) may have many isolated and sharp peaks. According to this ...

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A Multilevel Cascaded Inverter for Unbalanced DC Source using Carrier Based Neutral Voltage Modulation Strategy

A Multilevel Cascaded Inverter for Unbalanced DC Source using Carrier Based Neutral Voltage Modulation Strategy

... maximum linear modulation range was ...maximum modulation index in the linear modulation range under an unbalanced dc-link condition as well as to balance the output phase ...

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Analysis & Implementation of Frequency Modulation in Order to make a Frequency Transmitter

Analysis & Implementation of Frequency Modulation in Order to make a Frequency Transmitter

... sound. Frequency modulation transmits data (in our case an audio signal) over a carrier wave by changing the frequency of the carrier wave, where the frequency of the carrier wave corresponds ...

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Cascade H-bridge multilevel inverter at different Modulation index

Cascade H-bridge multilevel inverter at different Modulation index

... disposition modulation PD,POD, APOD ...maximum frequency of 5000 Hz and cycle started from ...Disposition Modulation at 0.25 modulation Index ...

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A Novel Three Phase Neutral Voltage Modulation Strategy for Eleven Level Inverter with Reduced Number of Switches

A Novel Three Phase Neutral Voltage Modulation Strategy for Eleven Level Inverter with Reduced Number of Switches

... maximum linear modulation range was ...maximum modulation index in the linear modulation range under an unbalanced dc-link condition as well as to balance the output phase ...

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Cascaded H-Bridge Inverter with Minimum Switches Using Hybrid Modulation Technique

Cascaded H-Bridge Inverter with Minimum Switches Using Hybrid Modulation Technique

... Hybrid modulation controller which generates the hybrid pulses for each separate H ...Hybrid modulation is the combination of Fundamental Frequency Pulse Width Modulation (FPWM) and Multi ...

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Reduction in sidelobe and SNR improves by using Digital Pulse Compression Technique

Reduction in sidelobe and SNR improves by using Digital Pulse Compression Technique

... Digital pulse compression is the technique to convert short pulse to long pulse because energy content of long pulse with low peak power would be the same with short pulse having high peak power. In this paper pulse ...

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Voltage Frequency Controller for Linear, Non Linear Load

Voltage Frequency Controller for Linear, Non Linear Load

... the frequency of generated voltage and reactive component for regulating the magnitude of generated ...PI frequency controller to the amplitude of the terminal ...

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Design And Development Of Software Defined Radio

Design And Development Of Software Defined Radio

... This project is to design and develop a Software Defined Radio that using implements the coding technique and modulation scheme (Quadrature Amplitude Modulation (QAM) with Orthogonal Frequency ...

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Switching Strategies Based Cascaded Multilevel Inverters Using Modulation Techniques

Switching Strategies Based Cascaded Multilevel Inverters Using Modulation Techniques

... APOD modulation pulses for cell-I (C) is obtained from the comparison between unipolar modulation waveform and carrier, while APOD for cell- II (D) is generated from the comparison between modulation ...

5

OH detection by absorption of frequency doubled diode laser radiation at 308nm

OH detection by absorption of frequency doubled diode laser radiation at 308nm

... MG, output 5 mW at room temperature was re- moved from its hermetically sealed can and mounted on a brass block equipped with a resistance heater and platinum resistance thermometer. The block was separated from a liquid ...

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Vol 8, No 6 (2018)

Vol 8, No 6 (2018)

... maximum linear modulation range was ...maximum modulation index in the linear modulation range under an unbalanced dc-link condition as well as to balance the output phase ...

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Improved OFDM by cancellation carrier frequency offset in GFDM based on multi-carrier modulation for future machine to machine systems

Improved OFDM by cancellation carrier frequency offset in GFDM based on multi-carrier modulation for future machine to machine systems

... multiple access systems adversely affect subcarrier orthogonality and impose a serious performance loss. The application of time domain receiver windowing to concentrate the leakage caused by carrier frequency ...

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Simulation of High Data Rate Transmission over Optical Cable Channels Using OFDM/OQAM Modulation

Simulation of High Data Rate Transmission over Optical Cable Channels Using OFDM/OQAM Modulation

... orthogonal frequency-division multiplex system with a raw data rate of 120 ...usual frequency guard band between the carrier and the sideband to be reduced in width, thus increasing spectral ...

6

B5_Radio_Digital_Modulation.pdf (1574k)

B5_Radio_Digital_Modulation.pdf (1574k)

... An unsynchronous FSK system is modulated by a digital signal and operates at 10 MHz. The frequency deviation is 850 Hz and bit rate is 110 bit/s. The peak to peak carrier signal is 2 V and noise power spectrum ...

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Joint Acoustic and Modulation Frequency

Joint Acoustic and Modulation Frequency

... and frequency modulation-based analy- sis/synthesis techniques have been previously developed ...amplitude modulation or, equivalently, multiplicative model can be empirically verified to be very ...

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