TY - GEN
T1 - Phase difference estimation based on orthogonal signals for distributed coherent aperture radar
AU - Yang, Xiaopeng
AU - Yin, Pilei
AU - Zeng, Tao
AU - Long, Teng
PY - 2013
Y1 - 2013
N2 - In distributed coherent aperture radar which is a new technology to replace traditional large aperture radars for next generation radar, all transmitted signals of unit radars should arrive at target at the same time and with the same phase so that the energy of all unit radars could be combined coherently. Therefore, the estimation of phase difference between signals at target is a key issue. In this paper, an estimation method of phase difference for distributed coherent aperture radar is proposed based on orthogonal signals. The mathematical model of phase difference is developed at first. And then, the estimation method of phase difference based on orthogonal signals is presented. In order to improve the estimation accuracy of phase difference, an improved design of orthogonal signals based on modified cost function is proposed. At last, simulations are carried out to illustrate the effectiveness of proposed method.
AB - In distributed coherent aperture radar which is a new technology to replace traditional large aperture radars for next generation radar, all transmitted signals of unit radars should arrive at target at the same time and with the same phase so that the energy of all unit radars could be combined coherently. Therefore, the estimation of phase difference between signals at target is a key issue. In this paper, an estimation method of phase difference for distributed coherent aperture radar is proposed based on orthogonal signals. The mathematical model of phase difference is developed at first. And then, the estimation method of phase difference based on orthogonal signals is presented. In order to improve the estimation accuracy of phase difference, an improved design of orthogonal signals based on modified cost function is proposed. At last, simulations are carried out to illustrate the effectiveness of proposed method.
KW - cost function
KW - distributed coherent aperture radar
KW - orthogonal signals
KW - phase difference
UR - http://www.scopus.com/inward/record.url?scp=84891092512&partnerID=8YFLogxK
U2 - 10.1109/RADAR.2013.6651986
DO - 10.1109/RADAR.2013.6651986
M3 - Conference contribution
AN - SCOPUS:84891092512
SN - 9781467351775
T3 - 2013 International Conference on Radar - Beyond Orthodoxy: New Paradigms in Radar, RADAR 2013
SP - 576
EP - 580
BT - 2013 International Conference on Radar - Beyond Orthodoxy
T2 - 2013 International Conference on Radar - Beyond Orthodoxy: New Paradigms in Radar, RADAR 2013
Y2 - 9 September 2013 through 12 September 2013
ER -