公开(公告)号：GB2528089A

公开(公告)日：2016-01-13

申请号：GB201412198

申请日：2014-07-09

Applicant: BAE SYSTEMS PLC

Inventor： COLOSIMO NICHOLAS GIACOMO ROBERT

IPC: G01S13/90

Abstract: A method and system of surveillance using a synthetic aperture radar (SAR) system, in which a plurality of datasets are captured, with each dataset comprising a plurality of images 1A, 2A, 3A, 4A, 5A captured at a plurality of imaging positions along a path relative to an area of interest. Each image of a dataset is compared with a respective corresponding image of the preceding dataset to produce first change detection images, e.g. coherent change detection (CCD) images, 1(A-B), 1(B-C), 1(C-D), 1(D-E) for each imaging position. Then, the first change detection image for each imaging position is compared with the change detection image for the immediately preceding imaging position to produce second change detection images, e.g. incoherent change detection (ICD) images, 1(A-B) 2(A-B) which highlight the changes between consecutive imaging positions along the imaging path. A display is used to show the second change detection images in real time.

公开(公告)号：IN3214DEN2015A

公开(公告)日：2015-10-02

申请号：IN3214DEN2015

申请日：2015-04-16

Applicant: BAE SYSTEMS PLC

Inventor： CULLEN ALAN MANUEL ,  COLOSIMO NICHOLAS GIACOMO ROBERT

IPC: G05D1/00 ,  G06F21/00

Abstract: A control system (100) for an unmanned vehicle (10) includes a control processing unit (102) which receives input signals from one or more sensors (101) and supplies output signals to one or more actuators (103). Processing modules (110) are divided into a plurality of successively linked stages (120). In a first stage (120A) , multiple processing modules (110) produce substantially equivalent payload data when operating correctly. Message cryptography units (140) generate cryptographically signed messages (800) containing the payload data. In a second stage , a voting cryptography unit (130) receives and examines the cryptographically signed messages , and applies voting logic to derive a validated payload data for use by the respective processing module (120) of the second stage. A control method is also described.