A Scheme to Measure Lateral Velocity by Radio Interferometry

作者：Li, Chuan^*; Chen, Zhangyou^*; Wu, Xiongbin^*

来源：IEEE Geoscience and Remote Sensing Letters, 2016, 13(2): 127-131.

DOI：10.1109/LGRS.2015.2495109

• Envelope signal
• interference signal
• lateral velocity
• linear frequency modulation (LFM) radar
• phase variation
• radio interferometry

It is difficult to acquire lateral velocity in the current radar applications. In order to obtain the velocity vector, two or more radar sites are needed. However, it is of great cost, and it is difficult to achieve real-time measurement. In this letter, a scheme is proposed to measure lateral velocity based on radio interferometry with which two receiving channels are adopted to obtain an interference signal. A formula describing the relationship between the phase varying slope of the interference signal and the lateral velocity whose direction is parallel to the tangent of the ellipse whose foci are the position of two receiving antennas was deduced. To verify the feasibility of measuring the lateral velocity with the proposed scheme, simulations of the echo signal of the linear frequency modulation radar are carried out; the result shows that the proposed scheme is very effective. An experimental result with high-frequency radar of Wuhan University further verifies the feasibility of this scheme to measure lateral velocity.

• 出版日期2016-2
• 单位武汉大学