Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Radar arrangement










Image Number 3 for United States Patent #5109231.

A radar system comprises a transmitter which essentially continuously transmits a modulated carrier wave signal and a receiver for receiving the carrier wave signal reflected at an object (echo signal). The carrier wave signal is modulated with a code-generating signal whose code frequency is determined for the range resolution of the radar. The code-generating signal is such that one bit in the code has a duration which is several times longer than the period of the carrier wave signal and several bits of the code form a block which is obtained by modulation of a carrier wave with constant frequency. The frequency of the carrier wave is changed between blocks so that the transmitter sends a block with a carrier wave frequency which is different from the carrier wave frequency or frequencies which the receiver is set up to receive. The receiver stores the transmitted code and correlates it with the received signal. When code correspondence (synchronism) is obtained this corresponds to a definitive position of the echo response reflector. By changing frequency between blocks different "types of radar" can be dedicated to different range zones, and a radar system is obtained which is adapted to cope with modern threat environments. The radar is difficult to spot, difficult to define and to disturb.








 
 
  Recently Added Patents
Method for computing an energy efficient route
Preparation and use of meristematic cells belonging to the Dendrobium phalaenopsis, Ansellia, Polyrrhiza, Vanilla, Cattleya and Vanda genera with high content of phenylpropanoids, hydrosoluble
Quantifying the risks of applications for mobile devices
Encoding method and encoding device, decoding method and decoding device and transcoding method and transcoder for multi-object audio signals
Wheel
Focus adjustment unit and optical scanning microscope
Image processing apparatus, image display apparatus, and image processing method
  Randomly Featured Patents
Structure and method to fabricate self-aligned transistors with dual work function metal gate electrodes
Real time searching and reporting
Method for manufacturing trench isolation
Handle for a toothbrush
System and method for controlling air/fuel mixture ratio of air and fuel mixture supplied to internal combustion engine using oxygen sensor
Method of imaging a zirconia ceramic surface to produce a lithographic printing plate
Information processing apparatus and method for executing plug and play processing via a predetermined communication medium
Method for preparing calcium magnesium acetate and a residual mineral product by selectively calcining dolomite
Inserts encapsulated with a thermoplastic sheet material via compression molding
Functionalized polysiloxane polymers