Saab Automobile AB

About: Saab Automobile AB is a based out in . It is known for research contribution in the topics: Radar & Signal. The organization has 760 authors who have published 890 publications receiving 11811 citations.

Navigation based on at least one sensor and a 3d map

Abstract: The invention relates to a method for navigation of an aerial vehicle. The method comprises providing a sensor image from an aerial vehicle sensor. The method also comprises to repeatedly, until at least one predetermined criterion is reached,perform the step of setting input data, where the input data comprises information related to pitch angle, roll angle, yaw angle and three-dimensional position of the aerial vehicle, the step of providing a two-dimensional image from a database based on the input data, where the database comprises three-dimensional geo-referenced information of the environment, and the step of comparing the sensor image and the two dimensional image from the database. The method further comprises using the input data for which the two images correspond best to each other for determining at least one of the following quantities pitch angle, roll angle, yaw angle and three-dimensional position of the aerial vehicle. The invention also relates to a system, a computer program and a computer program product.

Radar profiling above pine forests

Abstract: Results from helicopter borne measurements using a multi-band frequency modulated radar profiler are presented Comparisons are made between the tree height profiling responses in three different frequency bands (5, 14 and 35 GHz) The range response and its relationship to the foliage backscattering is modelled and volume related algorithms are discussed

An experimental 210 GHz radar system for 3D stand-off detection

Abstract: A 210 GHz radar system for studies of person scanning at stand-off distances is presented. The radar uses a mechanically scanned RX front-end based on an antenna-integrated MMIC. The TX part is based on an HBV quintupler. Image data formation is made using the FMCW and SAR principles.

Arrangement for distribution of cooling liquid in an internal combustion engine cooling jacket

Abstract: An arrangement for distribution of cooling liquid in the cooling liquid jacket in an internal combustion engine having cylinders disposed in-line in the cylinder block or in a bank of cylinders of the engine. The liquid jacket includes a liquid inlet chamber at one end of the row of cylinders and a liquid outlet chamber at the same end or at the opposite end of the row of cylinders and, in the cylinder block or bank of cylinders with associated cylinder head, mutually interconnected cooling liquid spaces and ducts which communicate with those chambers. In the lower portion of the cooling jacket, a liquid distribution pipe running along the row of cylinders is inserted at one side of the row of cylinders and has at one end a liquid inlet which communicates with the liquid inlet chamber. In the wall of the distribution pipe, liquid outlet holes are provided which are distributed along the distribution pipe and placed and directed in the distribution pipe wall so as to direct cooling water flows towards the cylinder tops and/or the spaces between them. These liquid outlet holes in the wall of the distribution pipe have successively increasing diameters away from the end of the row of cylinders where the liquid outlet chamber is situated. The outlet holes are preferably directed obliquely upwards toward the roof of the cooling jacket.

Infrared surveillance system for surface-to-air defense

Abstract: A land-based, passive IR system for the detection of airborne targets has been developed at Saab Missiles. The system operates in the 8 - 12 micrometers region. It scans 360 degree(s) in azimuth and up to 45 degree(s) in elevation and detects targets automatically. The paper describes the system in general, and in more detail the principles of the signal processing, that enable automatic detection of targets in the thermal clutter of sky and terrain background. A unique concept for rejection of false alarms from small objects at short distance (birds) is also described.