Nearest neighbor method-based circular array multi-baseline interferometer direction finding method

• Main Authors: ZHOU SHIPING, SHI WEN, WANG XIAOYUAN, HU ZHE, LI YUNJI, LI JIAO, FU BINBIN, ZHONG HUA, WANG ZHENGYANG
• Format: Patent
• Language: Chinese; English
• Published: 09.04.2019
• Subjects: ANALOGOUS ARRANGEMENTS USING OTHER WAVES; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES; MEASURING; PHYSICS; RADIO DIRECTION-FINDING; RADIO NAVIGATION; TESTING

The invention discloses a nearest neighbor method-based circular array multi-baseline interferometer direction finding method. The method is applied to a multi-baseline interferometer to detect a direction of a to-be-measured incoming wave signal, namely, an azimuth angle and a pitch angle of the to-be-measured incoming wave signal. The method comprises the following steps: a spatial two-dimensional table is preset, wherein each cell on the preset spatial two-dimensional table corresponds to a standard phase vector, and each standard phase vector corresponds to a set of specific azimuth angleand pitch angle; a plurality of actual phases of the to-be-measured incoming wave signal are obtained according to multiple baselines, and an actual phase vector is formed; according to the obtained actual phase vector, spatial distances between the obtained actual phase vector and the plurality of the standard phase vectors are calculated; and the standard phase vector which is matched with the minimum spatial distance i