Application of Digital Beamforming to Software Defined Radio 5G/Radar Systems

2019 ◽  
Author(s):  
Diogo Marinho ◽  
Raul Arruela ◽  
Tiago Varum ◽  
Joao N. Matos
Keyword(s):  
Software Defined Radio ◽  
Digital Beamforming ◽  
Radar Systems

scholarly journals Tracking of Aircrafts Using Software Defined Radio (SDR) With An Antenna

2021 ◽  
pp. 660-665
Author(s):  
H. Venkatesh Kumar ◽  
Surabhi. G ◽  
Neha V ◽  
Sandesh. Y. M ◽  
Sagar Kumar. H. S
Keyword(s):  
Real Time ◽  
Software Defined Radio ◽  
Air Transportation ◽  
Transportation System ◽  
Air Traffic ◽  
Next Generation ◽  
System Implementation ◽  
Traffic Surveillance ◽  
Radar Systems

Automatic Dependent Surveillance-Broadcast (ADS-B) is one in all the favoured technologies employed in air traffic surveillance. The ADS- B uses a band of 1090 MHz. ADS-B is attended with the prevailing radar-based technologies to locate aircraft. The Next Generation Air Transportation System (NGATS) conflicts can be detected and resolved by the coexistence of radar systems and ADS-B. Here we tend to track the aircraft using Software Defined Radio, hence the complexness and the value of ADS-B system implementation is drastically reduced. SDR can receive multiple numbers of aircraft information like altitude, latitude, longitude, speed, and direction in real-time and displayed by using an appropriate antenna. The usage of SDR maximizes the coverage of data with accuracy and may accomplish timely.

LTE-based passive multistatic radar for high-speed railway network surveillance: design and preliminary results

2019 ◽  
Vol 11 (5-6) ◽  
pp. 482-489
Author(s):  
Rodrigo Blázquez-García ◽  
Jorge Casamayón-Antón ◽  
Mateo Burgos-García
Keyword(s):  
Software Defined Radio ◽  
High Speed ◽  
Railway Network ◽  
High Speed Railway ◽  
Detection Range ◽  
Digital Beamforming ◽  
Radio Receivers ◽  
Network Surveillance ◽  
Multistatic Radar

AbstractWith the aim of performing perimeter surveillance of high-speed railway networks, this paper presents the design of a passive multistatic radar system based on the use of Long-Term Evolution (LTE) downlink signals as the illumination of opportunity. Taking into account the specifications and standard of the LTE system, the ambiguity function of measured downlink signals is analyzed in terms of range and Doppler resolution, ambiguities, and sidelobe level. The deployment of the proposed passive radar is flexible and scalable, and it is based on multichannel software defined radio receivers that obtain the reference and surveillance signals by means of digital beamforming. The signal processing and data fusion are based, respectively, on the delay-Doppler cross-correlation with the reconstructed reference signals and a two-stage tracking at sensor and central level. Finally, the performance of the proposed system is estimated in terms of its maximum detection range and simulation results of the detection of moving targets are presented, demonstrating its technical feasibility for the short-range detection of pedestrians, vehicles, and small drones.

Efficient Digital Beamforming for Bluetooth 5.1 Using Software Defined Radio

2021 ◽  
pp. 1-10
Author(s):  
Fabricio Toasa ◽  
Luis Tello-Oquendo ◽  
Carlos Ramiro Penafiel-Ojeda ◽  
Anibal Llanga-Vargas ◽  
Giovanny Cuzco
Keyword(s):  
Software Defined Radio ◽  
Digital Beamforming

scholarly journals Deteksi Radar Pasif menggunakan GNU Radio dan SDR pada Frekuensi Televisi

2020 ◽  
Vol 8 (3) ◽  
pp. 505
Author(s):  
YONATAN EDWIN MARPAUNG ◽  
ALOYSIUS ADYA PRAMUDITA ◽  
ERFANSYAH ALI
Keyword(s):  
Software Defined Radio ◽  
Cross Correlation ◽  
Moving Objects ◽  
Radar System ◽  
Digital Television ◽  
Passive Radar ◽  
Gnu Radio ◽  
Delay Test ◽  
Radar Systems ◽  
Television Receiver

ABSTRAKRadar pasif adalah salah satu jenis sistem radar bistatic dimana transmitter dan receiver berada di tempat berbeda. Sistem radar pasif dapat memaanfaatkan frekuensi siaran televisi yang tersedia sebagai sumber transmitter. Pada penelitian ini, radar pasif dibuat dengan Sofware Defined Radio (SDR) sebagai sistem komunikasi yang dapat mengkofigurasi penerima televisi digital sdr-dongle RTL2832U yang dimodifikasi dan perangkat lunak GNU Radio. Hasil pengujian delay pada gelombang 1,2,3 untuk objek manusia adalah 0,192, 0,36 dan 0,53 detik, untuk objek sepeda adalah 0,332, 0,5 dan 0,67, untuk objek motor adalah 0,422, 0,69 dan 0,86 detik, untuk objek mobil adalah 0,538, 0,7 dan 0,87 detik sehingga dapat disimpulkan bahwa sistem radar pasif yang dirancang dapat mendeteksi benda bergerak dimana pegerakan target menyebabkan pergeseran puncak Cross-Correlation.Kata kunci: Radar Pasif, Cross-Correlation, SDR, Frekuensi Televisi, RTL2832U ABSTRACTPassive radar is a type of bistatic radar system where the transmitter and receiver are in different places. Passive radar systems can utilize the available television broadcast frequencies as transmitter sources. In this study, passive radar is made with Software Defined Radio (SDR) as a communication system that can configure a modified RTL2832U sdr-dongle digital television receiver and GNU Radio software. The delay test results on waves 1,2,3 for human objects are 0.192, 0.36 and 0.53 seconds, for bicycle objects are 0.332, 0.5 and 0.67, for motor objects are 0.422, 0.69 and 0.86 seconds, for car objects are 0.538, 0.7 and 0.87 seconds so it can be concluded that the passive radar system is designed to detect moving objects where moving targets causes a shift in the peak of Cross-Correlation.Keywords: Passive Radar, Cross-Correlation, SDR, Television Frequency, RTL2832U

scholarly journals Maximally Flat and Least-Square Co-Design of Variable Fractional Delay Filters for Wideband Software-Defined Radio

2018 ◽  
Vol 28 (01) ◽  
pp. 1950006
Author(s):  
Haolin Li ◽  
Joris Van Kerrebrouck ◽  
Johan Bauwelinck ◽  
Piet Demeester ◽  
Guy Torfs
Keyword(s):  
Software Defined Radio ◽  
Main Idea ◽  
Least Square ◽  
Design Parameters ◽  
Timing Synchronization ◽  
Implementation Cost ◽  
Digital Beamforming ◽  
Farrow Structure ◽  
Fractional Delay ◽  
Rate Conversion

This paper describes improvements in a Farrow-structured variable fractional delay (FD) Lagrange filter for all-pass FD interpolation. The main idea is to integrate the truncated sinc into the Farrow structure of a Lagrange filter, in order that a superior FD approximation in the least-square sense can be achieved. Its primary advantages are the lower level of mean-square-error (MSE) over the whole FD range and the reduced implementation cost. Extra design parameters are introduced for making the trade-off between MSE and maximal flatness under different design requirements. Design examples are included, illustrating an MSE reduction of [Formula: see text] compared to a classical Farrow-structured Lagrange interpolator while the implementation cost is reduced. This improved variable FD interpolation system is suitable for many applications, such as sample rate conversion, digital beamforming and timing synchronization in wideband software-defined radio (SDR) communications.

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