• Title, Summary, Keyword: High Speed Multi-DSP

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Pulse Doppler Radar Signal Processor Development for Main Battle Tank Using High Speed Multi-DSP (고속 Multi-DSP를 이용한 전차 탑재 펄스 도플러 레이더 신호 처리기 개발)

  • Park, Gyu-Churl;Ha, Jong-Soo
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.20 no.11
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    • pp.1171-1177
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    • 2009
  • A missile warning radar is an essential sensor for active protection system to detect antitank missile in all weather environments. This paper introduces missile warning radar for main battle tank and presents the results of the design and implementation of the radar signal processor using high speed multi-DSP. The key algorithms include adaptive CF AR, weighted linear fitting algorithm, S/W tracking capability, and threat decision and present test result.

A Helicopter-borne Pulse Doppler Radar Signal Processor Development using High Speed Multi-DSP (고속 Multi-DSP를 이용한 헬기탑재 펄스 도플러 레이다 신호처리기 개발)

  • Kwag, Young-Kil;Choi, Min-Su;Jeun, In-Pyung;Hwang, Gwang-Yeon;Lee, Kang-Hoon;Lee, Jae-Ho
    • Proceedings of the Korea Electromagnetic Engineering Society Conference
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    • pp.23-28
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    • 2005
  • An airborne radar is an essential aviation electronic system of the helicopter to perform various missions in all-weather environments. This paper presents the results of the design and implementation of the airborne pulse doppler radar signal processor using high multi-DSP for the multi-function radar capability such as short-range, midium-range, and long-range depending on the mission of the vehicle. Particularly, the radar signal processor is developed using two DSP boards in parallel for the various radar signal processing algorithm. The key algorithms include LFM chirp waveform-based pulse compression, MTI clutter filter, MTD processor, adaptive CFAR, and clutter map. Especially airborne moving clutter Doppler spectrum compensation algorithm such as TACCAR is implemented for the multi-mode airborne radar system. The test results shows the good Doppler spectral separation for the clutter and the moving target in the flight test environment using helicopter.

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A Performance Assessment of Real-time Multichannel Audio Codec

  • Kim, Sunghan;Jang, Daeyoung;Hong, Jinwoo
    • The Journal of the Acoustical Society of Korea
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    • v.16 no.3E
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    • pp.56-61
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    • 1997
  • In this paper, we describe a real-time implementation of a multi-channel auido codec system that is based on the MPEG-1 audio algorithm. The major feature of this system is that it has a flexible multi-DSP system that can be adapted for various applications with using up to four TMS320C40 DSPs. The purpose of this paper is to present the problems of the system and is to describe the optimized methods to solve the problems in the view of hardware and software. Our audio codec is composed of an encoder an a decoder system and the bit rate of bitstream is up to 384 kbps. Fast input/output interfaces, DSP overloads, and inter-DSP communications methods with high speed are considered in multi-DSP H/W. Also, to run real-time in S/W, optimizing methods of algorithm are considered. After implementation of system, the subjective assessment method, and 'triple stimulus/hidden reference/double blind' that recommended by ITU-R TG10/3 is adopted for the quality of our system. All test items except one are awarded difference grades(diffgrade) better than 1-. Form the results, multi-channel audio system can be used for HDTV service.

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High Speed Triple-port Register File for 32-bit RISC/DSP Processors (32비트 RISC/DSP CPU를 위한 고속 3포트 레지스터 파일의 설계)

  • 고재명;유동렬
    • Proceedings of the IEEK Conference
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    • pp.1165-1168
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    • 1998
  • This paper describes a 72-word by 32-bit 2-read/1-write multi-port register file, which is suitable for 32-bit RISC/DSP microprocessors. To minimize area and achieve high speed, advanced single-ended sense amplifiers are used. Each part of circuit is optimized at transistor level. The verification of functionality and timing is performed using HSPICE simulations. After modeling and validating the circuit at transistor level, it was laid out in a 0.6um 1-poly 3-metal layer CMOS technology. The simulation results show maximum operating frequency is 179MHz in worst case conditions. It contains 27,326 transistors and the size is 3.02mm by 2.20mm.

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Development of Multi-Axis Controller using DSP and its use on a Robot Control System (DSP를 이용한 다축제어기 개발 및 로봇 제어 시스템에의 응용)

  • Lee, Joon-Soo;Yoo, Beom-Jae;Oh, Sang-Rok;Cho, Young-Jo;Lee, Chong-Won
    • Proceedings of the KIEE Conference
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    • pp.1225-1227
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    • 1996
  • In this paper, we delelop 4-axis motion controller using TMS320c30 DSP chip and build a 5-axis vertical articulated robot control system. The 4-aixs controller uses a DSP, a high-speed AID and a D/A converter to implement advanced robot control algorithms. The robot control system uses VME-bus and VxWorks realtime multi-tasking operating system. We use RCCL type to implement robot languages.

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A Helicopter-borne Pulse Doppler Radar Signal Processor Development (헬기탑재 펄스 도플러 레이다 신호처리기 개발)

  • Kwag, Young-Kil;Jeun, In-Pyung;Choi, Min-Su;Hwang, Gwang-Yeon;Lee, Kang-Hoon;Lee, Jae-Ho
    • Proceedings of the IEEK Conference
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    • pp.443-446
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    • 2005
  • This paper presents the results of the design and implementation of the airborne pulse doppler radar signal processor using high multi-DSP for the multi-function radar capability such as short-range, midium-range, and long-range depending on the mission of the vehicle. Particularly, the radar signal processor is developed using two DSP boards in parallel for the various radar signal processing algorithm. The key algorithms include LFM chirp waveform-based pulse compression, MTI clutter filter, MTD processor, adaptive CFAR, and clutter map. Especially airborne moving clutter Doppler spectrum compensation algorithm such as TACCAR is implemented for the multi-mode airborne radar system. The test results shows the good Doppler spectral separation for the clutter and the moving target in the flight test environment using helicopter

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Real-time Implementation of Multi-channel AMR Speech Coder (멀티채널 AMR 음성부호화기의 실시간 구현)

  • 지덕구;박만호;김형중;윤병식;최송인
    • The Journal of the Acoustical Society of Korea
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    • v.20 no.8
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    • pp.19-23
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    • 2001
  • DSP-based implementation is pervasive in wireless communication parts for systems and handsets according to developing high-speed and low-power programmable Digital Signal Processor (DSP). In this paper, we present a real-time implementation of multi-channel Adaptive Multi-rate (AMR) speech coder. The real-time implementation of an AMR algorithm is achieved using 32-bit fixed-point TMS320C6202 DSP chip that operates at 250 MHz. We performed cross compile, linear assembly optimization and TMS320C62xx assembly optimization for real-time implementation. Furthermore, speech data input/output function and communication function with external CPU is included in an AMR speech coder. The AMR Speech coder developed using DSP EVM board was evaluated in ETRI IMT-2000 Test-bed system.

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Development of 3-D Multi-Function Radar High-Speed Real-Time Signal Processor (3차원 다기능 레이더 고속 실시간 신호 처리기 개발)

  • Roh, Ji-Eun;Choi, Byung-Gwan;Lee, Hee-Young;Yang, Jin-Mo;Lee, Kwang-Chul;Lee, Dong-Hwi;Jung, Rae-Hyung;Kim, Tae-Hwan;Lee, Min-Joon
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.22 no.12
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    • pp.1045-1059
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    • 2011
  • A 3-D multi-function radar(MFR) is a modern radar to provide various target information, such as range, doppler, and angle by performing surveillance, multiple target tracking, and missile guidance. In this paper, we introduced a real-time radar signal processor(RSP), which is a crucial component of MFR with its design, implementation using high-speed multiple DSP, and performance. Additionally, we verified that several advanced signal processing algorithms were well-performed in our RSP, such as MCA-CFAR algorithm for target detection in clutter environment, range and velocity measurement algorithm using discriminator estimation, and noise jammer detection algorithm using local minimum selection.

Efficiency Improvement of Digital Protective Relay for Power Transformer Using DMA Controller of DSP (DSP의 DMA 제어기를 이용한 변압기용 디지털 보호계전기의 성능향상)

  • 권기백;서희석;신명철
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.11
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    • pp.647-654
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    • 2003
  • As electrical power system has become complicated and enlarged to cope with the increasing electric demand, it has to be expected that higher speed, higher reliability, higher function and higher arithmetic ability in protective relay should be realized. Therefore, in this papers, by hardware design and implementation used DMA controller that transfer blocks of data to any location in the memory map without interfering with CPU operation, CPU utilization is increased effectively, as a result it made possible to implement multi-function digital protective relay which has high trust and high function of protection as well as control and metering for power transformers using single processor(DSP).

The Development of DSP Based Multi Controller for Direct Drive Method Turbo Compressor (DSP를 이용한 직접 구동방식의 터보 압축기용 통합 제어기 개발)

  • 권정혁;변지섭;최중경;류한성
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.6 no.6
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    • pp.885-890
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    • 2002
  • Turbo compressor needs high speed rotation of impeller in structure, high rated gearbox and conventional induction motor. This mechanical system increased the moment of inertia and mechanical friction loss. Resently the study of turbo compressor applied super high speed motor and drive, removing gearbox made its size small and mechanical friction loss minimum. In this study we tried to develope variable super high speed motor controller, compressor controller and MMI controller under one DSP based systems for 1500Hp, 70,000rpm direct drive Turbo compressor. It have to do unitification of each controller"s hardware and software. The result of study is applied to a 150Hp direct turbo compressor and makes it goods.oods.