News Release

Passive Location Method Based on Phase Difference Measurement

Book Announcement

Bentham Science Publishers

Based on the needs of engineering applications, this monograph presents a variety of direction-finding and ranging methods based on short baseline array and using unambiguous phase difference measurement technology. Furthermore, the method of constructing long baseline two-station direction finding and ranging with short baseline array is further developed. On the basis of studying the relationship between the phase difference and angle, a variety of two-station passive positioning methods based on angle measurement are presented which are beneficial to improve the positioning accuracy. Several pure angle detection methods for target heading angle are also given. In order to improve the positioning accuracy, the passive positioning method based on phase frequency relation is developed.

In this monograph, “Passive Location Method Based on Phase Difference Measurement“  the passive location based on fuzzy-phase difference measurement is explored theoretically, and a variety of new location methods are given, such as the orthogonal short-baseline fuzzy-free direction finding method; Double station baseline high precision direction finding and ranging.

In the book “Passive Location Method Based on Phase Difference Measurement“, while making theoretical exploration of passive location problem based on unambiguous phase difference measurement, not only a variety of new positioning methods, such as orthogonal short baseline direction finding method without fuzzy and double station long baseline high precision direction finding and ranging, but also a lot of novel concepts are given, for example: The property of the arithmetic series between adjacent path difference; Median relation among three radial distances; The path difference function on per unit length; Reference baseline for virtual short baseline; Virtual extension of baseline; The transformation relation between frequency shift and path difference.

Passive Location Method Based on Phase Difference Measurement“ can be studied by researchers and engineers in radio positioning and navigation, and can also be used as a teaching reference book for related majors in colleges and universities.

About the Author:

Dr Tao Yu has majored in precision mechanical structure in Shanghai University of Science and Technology. After graduation, He was assigned to work in the Third Research Institute of the Ministry of Public Security of China. Relying on excellent self-study and practical ability to switch to antenna engineering design, I can write some papers according to the engineering design results. Later, studied in the Graduate class of Antenna and Radio Wave Propagation in Shanghai University of Technology, and wrote some research papers on electromagnetic field theory, which were published in many international academic conferences and university journals.

After 2000, He worked in China Aviation Radio Electronics Research Institute, where he was the general designer of remote control communication system for UAV ground station.

In 2010, He went to Shanghai Microwave Technology Institute of China and engaged in passive positioning technology research.

He had published more than 200 papers on electromagnetic theory, antenna technology and passive positioning methods. I have applied for more than ten invention patents.

He had published one book and co-authored 3. He had over 1,300 readers on ResearchGate. In the last two years, he had reviewed two articles for two internationally renowned journals. In the past three years, He had served as a member of the technical procedure committee of more than 20 international conferences.


Radar positioning, phase difference positioning equation, passive positioning, Median relation among three radial distances,  phase difference measurement, Unambiguous phase difference measurement , No fuzzy phase detection, Orthogonal phase difference direction finding, Linear solution of the difference equation, Unambiguous phase difference ranging, Much station positioning, phase-frequency conversion, Median relation among three arrival angles, Similar recursion, Single base midpoint direction finding solution, The azimuth-only estimation of the course, Long baseline direction finding, two planes co-location,  Virtual short baseline direction finding, Virtual extension of baseline length.

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