Pattern synthesis for TechSat21 - A distributed space-based radar system

被引：12

作者：

Steyskal, H ^{[1
]}

Schindler, JK ^{[1
]}

Franchi, P ^{[1
]}

Mailloux, RJ ^{[1
]}

机构：

[1] AF Res Lab, SNH, Hanscom AFB, MA 01730 USA

来源：

IEEE ANTENNAS AND PROPAGATION MAGAZINE | 2003年 / 45卷 / 04期

关键词：

spaceborne radar; pulse Doppler radar; antenna arrays; antenna radiation patterns; space-time pattern synthesis; multi-element interferometer; satellite antennas; satellite applications; search radar;

D O I：

10.1109/MAP.2003.1241307

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The TechSat21 space-based radar employs a cluster of free-floating satellites, each of which transmits its own orthogonal signal and receives all reflected signals. The satellites operate coherently at X band. The cluster forms essentially a multi-element interferometer, with a concomitantly large number of grating lobes and significant ground clutter. A novel technique for pattern synthesis in angle-frequency space is proposed, which exploits the double periodicities of the grating lobes in the angular domain and of the radar pulses in the frequency domain, and allows substantial gains in clutter suppression. Gains from 7 to 17 dB relative to the normal random, sparse array appear feasible.

引用

页码：19 / 25

页数：7