Antenna Setting Altitude Design and Analysis of Side-lobe Contamination for a Bistatic Doppler Weather Radar

Mo Yueqin; Liu Liping; Xu Baoxiang

Vol.18, NO.1, 2007

Article Contents

Article Navigation > Journal of Applied Meteorological Science > 2007 > 18(1): 114-118

Mo Yueqin, Liu Liping, Xu Baoxiang. Antenna setting altitude design and analysis of side-lobe contamination for a bistatic Doppler weather radar. J Appl Meteor Sci, 2007, 18(1): 114-118.

Citation:

Mo Yueqin, Liu Liping, Xu Baoxiang. Antenna setting altitude design and analysis of side-lobe contamination for a bistatic Doppler weather radar. J Appl Meteor Sci, 2007, 18(1): 114-118.

Mo Yueqin, Liu Liping, Xu Baoxiang. Antenna setting altitude design and analysis of side-lobe contamination for a bistatic Doppler weather radar. J Appl Meteor Sci, 2007, 18(1): 114-118.

Citation:

Mo Yueqin, Liu Liping, Xu Baoxiang. Antenna setting altitude design and analysis of side-lobe contamination for a bistatic Doppler weather radar. J Appl Meteor Sci, 2007, 18(1): 114-118.

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Antenna Setting Altitude Design and Analysis of Side-lobe Contamination for a Bistatic Doppler Weather Radar

1.
State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081
2.
Atmospheric Observation Technology Center, CMA, Beijing 100081

Received Date: 2006-05-12
Rev Recd Date: 2006-09-29
Publish Date: 2007-02-28

Abstract

Abstract

A bistatic Doppler weather radar system consists of one conventional Doppler weather radar and one or more remote passive receivers with low-gain antennas. It is among the new techniques in the atmospheric wind field detection. The first atmospheric observation by a bistatic Doppler radar in China is done by the National Research Project, "Mechanism and Predict Theory of Disastrous Weather over China". The meteorological echo data are obtained in Hefei by a bistatic Doppler radar made in China in 2004.Antenna setting altitude design and side-lobe contamination are key problems in the design and application of the bistatic Doppler weather radar. Based on the principles of bistatic Doppler radar observation, the problems mentioned above are studied. For operational application of a bistatic Doppler weather radar, a design for radar antenna installation with parameter of target detection height is described, which is convenient in calculation and practicable in operation. For a specified detection height, the longer baseline requires the higher antenna installation of transmitter or receiver. In addition, the side-lobe contamination is an important problem in bistatic radar technique, since its receiver has wide-beamwidth antenna. Also, the main contamination causes are analyzed. A method of reducing or eliminating the contamination is proposed, by which may control the bistatic radar observation data quality.
- bistatic Doppler radar;
- antenna setting altitude design;
- side-lobe contamination

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References(10)

Figures and Tables

图 1 双基地雷达天线架设高度

Fig. 1 Relationship between bistatic radar (with different baselines) antenna setting altitude and its lowest detectable object height

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图 2 单基地雷达接收的总散射能量示意图

(T为主动雷达)

Fig. 2 Schematic diagram of total scattering energy received by monostatic radar

("T" denotes active radar site)

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图 3 双基地雷达旁瓣污染示意图

(T为主动雷达, R为被动雷达)

Fig. 3 Schematic diagram of side-lobe contamination of bistatic radar

("T, R" denote active and passive radar sites, repectively)

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References

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