Generation and Implementation of Barker and Nested Binary codes

Jyothi, A. Naga

doi:10.9790/1676-0823341

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Barker code is suitable for radar applications because it can reach the lowest side lobe value on the correlation results among other codes [11]. A longer generated Barker code leads to a lower side lobe value compared to the main lobe.…”

Section: B Barker Codementioning

confidence: 99%

Random Time Delay Mitigation in Pulse Radar Systems Implementation using Universal Software Radio Peripheral (USRP) and GNU Radio Companion (GRC)

Utami

Iswandi

Mustika

2019

IJITEE

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Abstract— Radar or radio detection and ranging has a basic function to detect and measure a target range. One of the latest developments is Software Defined Radio (SDR)-based radar. An example of SDR implementation is by using Universal Software Radio Peripheral (USRP) as hardware and GNU Radio Companion (GRC) as software. The simplest radar type is pulse radar in which system timing is crucial. Meanwhile, in pulse radar system implementation using USRP and GRC, there is an issue with the random processing time delay between communication protocol of USRP and computer running the GRC, which causes incorrect measurement. This research aims to analyze the random time delay in the pulse radar system implementation by using USRP and GRC to anticipate the effect of random time delay. Pulse radar systems implementation is administered by transmitting 128 bits of Barker code and performing correlation between transmitted and received radar signal. Research result shows that the random time delay can be anticipated by making the direct reception from radar transmitter to receiver as the reference in range calculation.

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Section: B Barker Codementioning

confidence: 99%

Random Time Delay Mitigation in Pulse Radar Systems Implementation using Universal Software Radio Peripheral (USRP) and GNU Radio Companion (GRC)

Utami

Iswandi

Mustika

2019

IJITEE

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“…The random number generator is loaded to a signal named temp-A. The flow between the states depends on seed values, size of binary string therefore the total number of clock cycles required are not fixed [28].…”

Section: Algorithmic State Machine (Asm)mentioning

confidence: 99%

Design and Implementation of the Ternary Sequences with Good Merit Factor Values

Aggala¹,

K²

2014

IJCA

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The pulse compression codes with low autocorrelation sidelobe levels and high Merit Factor (MF) are useful in radar, channel estimation and spread spectrum communication applications. One of the main criteria of good pulse compression is MF. A sequence with high MF can be considered as best sequence.In this paper an efficient VLSI architecture is proposed for generation and implementation of the ternary sequences using Finite State Machines [FSM]. This VLSI architecture is implemented on the FPGA as it provides the flexibility of reconfigurability and reprogramabilityThe ternary pulse compression sequence elements are +1,0,-1.Ternary sequences have superior MF compared to binary sequences but cannot be transmitted with existing technology. For transmission of ternary sequences, they must be coded into binary sequences. The binary sequence is chosen such that each of these bi-alphabetic interpretations leads to high MF. At the received section again the received sequence has to be decoded from binary to ternary. The VLSI architecture for implementing ternary codes has been authored in VHDL and the synthesis was done with Xilinx XST, ISE Foundation 12.1i has been used for performing mapping, placing and routing.

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Generation and Implementation of Barker and Nested Binary codes

Cited by 2 publications

References 7 publications

Random Time Delay Mitigation in Pulse Radar Systems Implementation using Universal Software Radio Peripheral (USRP) and GNU Radio Companion (GRC)

Random Time Delay Mitigation in Pulse Radar Systems Implementation using Universal Software Radio Peripheral (USRP) and GNU Radio Companion (GRC)

Design and Implementation of the Ternary Sequences with Good Merit Factor Values

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