• Title/Summary/Keyword: Monopulse

Search Result 106, Processing Time 0.034 seconds

A Study on the gain and phase matching between channels in the Monopulse Receiver (모노펄스 수신기의 채널간 정합에 관한 연구)

  • 공덕규
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.4 no.1
    • /
    • pp.83-92
    • /
    • 2001
  • In this paper, the monopulse channel receiver which can be matched between channels through a wide bandwidth has been proposed. The effects of the gain and phase imbalance between channels on the slope of monopulse error signal were analyzed. Also, the matching method between channels in a wide bandwidth was proposed, by which monopulse slope could be stabilized. Using the implemented monopulse radar system the monopulse slope was measured in the anechoic chamber which include the moving horn antenna and the target signal generator. The results show that the wide band matching method is useful and applicable to various channel receivers

  • PDF

A Study on 1-Channel Monopulse Receiver (단일채널 모노펄스수신기에 관한 연구)

  • Kwon, Hyuk-Ja;Lee, Young-Jin;Jung, Jin-Woo
    • Journal of the Institute of Electronics and Information Engineers
    • /
    • v.51 no.1
    • /
    • pp.71-76
    • /
    • 2014
  • In this paper, we proposed the 1-channel monopulse receiver which has the new configuration and described the operation procedures. Also, we compared and analyzed the proposal receiver and the general 3-channel monopulse receiver. As a result, it is apparent that the monopulse ratio of the proposal receiver is equal to that of the 3-channel monopulse receiver. The proposal receiver achieve the simple receiver configuration and the simple tracking procedures, as contrasted with the 3-channel monopulse receiver. Also, the proposal receiver has advantages in terms of size, weight, cost and power. Because the proposal monopulse receiver require 1-channel receiver and need not the signal processor in comparison with 3-channel monopulse receiver which require 3-channel receiver and need the signal processor.

Design and Fabrication of the 1-Channel Monopulse Receiver (단일채널 모노펄스수신기 설계 및 제작)

  • Kwon, Hyuk-Ja;Lee, Young-Jin;Kang, Byoung-Wook
    • Journal of the Institute of Electronics and Information Engineers
    • /
    • v.52 no.12
    • /
    • pp.3-9
    • /
    • 2015
  • In this paper, we propose the operation procedures of the 1-channel monopulse receiver which achieves the new configuration. Also, we analyzed the monopulse ratio and the target angle accuracy of the fabricated receiver by using the monopulse signal generator developed for verifying the proposal equipment. As a result, it is apparent that the monopulse ratio of the proposal receiver is equal to that of the 3-channel monopulse receiver. Also, the fabricated receiver exhibits the target angle accuracy with fewer than 0.1 RMS. The proposal receiver achieves the simple receiver configuration and the simple tracking procedures, as contrasted with the 3-channel monopulse receiver. Also, the proposal receiver has advantages in terms of size, weight, cost and power. Because the proposal monopulse receiver requires 1-channel receiver and needs not the signal processor in comparison with 3-channel monopulse receiver which requires 3-channel receiver and need the signal processor.

Implementation and Performance Analysis of the Single Channel Monopulse System (단일채널 모노펄스시스템의 구현 및 성능 검증)

  • Kang, Byoung-Wook;Kwon, Hyuk-Ja;Lee, Young-Jin
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.27 no.10
    • /
    • pp.900-908
    • /
    • 2016
  • In this paper, we have studied the tracking system with a single channel monopulse receiver that has a comparative advantage of costs, size, weight, and power consumption over the general 3-channel monopulse receivers. After the single channel monopulse system was composed of an antenna, a monopulse receiver, a servo unit, a RF signal processor unit and a power supply unit, we analyzed the basic tracking performance of the tracking error angle and the pointing loss. And we proved the tracking performance to a moving target in the outdoor environment. On the Analysis of the tracking test results, the single channel monopulse system shows a equal or higher performance over the general 3-channel monopulse system and also has advantages of the system implementation. Also, it is concluded that this study is useful to apply a single channel monopulse receiver with benefits of production price and miniaturization when the monopulse tracking systems will be developed in the future.

A Study on Optimization of Single-Channel Monopulse Tracking System using Phased Array Antenna (위상배열안테나를 이용한 단일 채널 모노펄스 추적 시스템의 최적화에 관한 연구)

  • Jung, Jin-Woo
    • The Journal of the Korea institute of electronic communication sciences
    • /
    • v.13 no.4
    • /
    • pp.705-712
    • /
    • 2018
  • The radiation characteristics of a phased array antenna is changed according to the beam steering angle. The monopulse tracking system calculates the prediction angle using the radiation characteristics of antenna. Therefore, the monopulse ratio curve is changed according to the beam steering angle for the monopulse tracking system using a phase array antenna, and the tracking accuracy goes down. In the case of a single-channel monopulse system, the monopulse rate curve is controlled by the configuration variables of the system. In this paper, a simplified formula was presented for adaptive control of monopulse system configuration variables on beam steering angle. The presented formula can induce a uniform monopulse ratio curve for the beam steering angle as well as the phased array antenna design parameters.

An Analysis of Spot Noise Jamming Technique in a Monopulse Sensor (모노펄스 센서에 대한 점 잡음 재밍 기법의 효과도 분석)

  • Lee, Seong-Hyeon;Jeong, Nam-Hoon;Choi, Young-Ik;Hong, Sang-Guen;Oh, Seung-Sup;Na, In-Seok;Lee, Chang-Hoon;Kim, Kyung-Tae
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.28 no.3
    • /
    • pp.237-245
    • /
    • 2017
  • In this paper, a monopulse sensor which determines a target location using amplitude-comparison monopulse technique is presented. This sensor can allow the missile to track the target when additional jamming signals are not presented. Then, we applied the spot noise jamming technique to the monopulse sensor. Based on the simulation results, we can effectively figure out the performances of the spot noise jamming technique for the monopulse sensor in various jamming scenarios.

Design of monopulse feeder using corrugated E-plane horn (E-평면 컬러게이트 혼을 이용한 모노펄스 급전기 설계)

  • 이주형;남상욱
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.21 no.8
    • /
    • pp.2099-2108
    • /
    • 1996
  • The performance of the E-plane monopulse feeder is shown to e improved by using corrugated horn and multimode design. The proposed multimode corrugated horn is analyzed by the mode matching technique. an E-plane monopulse feeding horn is designed and fabricated to show the performance of the multimode corrugated horn. The experiment agrees quite well with the thoretical analysis. The results can be used in the design of monopulse type tracking radar antenna.

  • PDF

Monopulse Tracking Performance of a Satcom Antenna on a Moving Platform

  • Cho, Gyuhan;Kim, Gwang Tae
    • Journal of electromagnetic engineering and science
    • /
    • v.17 no.3
    • /
    • pp.120-125
    • /
    • 2017
  • A satellite communication (Satcom) antenna mounted on a moving platform provides a controlled heading that enables a geosynchronous satellite to communicate with the ground. A monopulse tracking method is effective for antenna control on a vehicle when it vibrates severely. However, this method has unexpected obstacles and its control performance is insufficient. To improve its control performance, the control command and monopulse error, the signal delay, and the radome effect are evaluated through tests. The authors then propose a method to transform the antenna error from 3D coordinates to 2D antenna coordinates. As a result, the antenna control performance is improved. As indicated in this study, examining antenna systems using the monopulse method on moving platforms is possible by understanding the antenna test process.

Genetic Algorithm Based Linear Region Extension for Multivariable Monopulse Tracking Systems (다변수 모노펄스 추적 시스템에서 유전 알고리즘 기반 선형구간 확장)

  • Jung, Jinwoo;Kim, Jaesin;Ryu, Young-Jae
    • Journal of the Korea Institute of Military Science and Technology
    • /
    • v.20 no.2
    • /
    • pp.272-278
    • /
    • 2017
  • In this paper, we consider a single-channel amplitude comparison monopulse system(SCACMS). The monopulse ratio curve(MR-C) of the SCACMS can be controlled by an amplitude difference between sum and different signal, a phase difference and the coefficient of the signal processor. We first propose the SCACMS with multiple variables, and then apply a genetic algorithm to optimize the multiple variables in terms of minimizing a root mean square error. The simulation results show that when three variables of the SCACMS are jointly optimized, the linear region of the MR-C can be extended approximately 187 % compared to that of two variables.

Performance of Amplitude Comparison Monopulse Radar (진폭비교 모노펄스 레이다의 성능)

  • An, Do-Jin;Lee, Joon-Ho
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
    • /
    • v.29 no.12
    • /
    • pp.969-975
    • /
    • 2018
  • The main function of the tracking radar is to automatically track the target. The amplitude-comparison monopulse radar utilizes a monopulse radar to estimate the angular components of a target. In this paper, the operating performance of the amplitude-comparison monopulse radar is quantitatively analyzed via the MSEs, with considerations on additive noise. The performance of the amplitude comparison monopulse radar can be predicted by comparing it with an approximated estimate.