The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 23, 1993
Filed:
May. 08, 1992
Yuichi Kuroda, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A secondary surveillance radar system combines a mechanical scanning type of mode-S sensor using a mechanical rotation type of antenna and an electronic scanning type of mode-S sensor using an electronic scanning type of antenna. The mechanical scanning type of mode-S sensor performs at least mode-A/C general inquiry/response with aircraft targets and create a file of surveillance data obtained by the general inquiry/response. This allows circumvention of problems, which would be encountered in performing the same processing by using the electronic scanning system, such as the deterioration of accuracy of monopulse angular measurement, the increasing probability that unwanted responses will be received, etc., which are due to the elevation dependence of horizontal beamwidths. The electronic scanning type of mode-S sensor performs at least mode-S individual inquiry/response, reducing the time interval allotted for the general inquiry/response, thereby permitting an increase in data link communications capacity, and real-time communications.