Nordnav Technologies Ab

Jonas Paul Thor

Per-Ludvig Normark

Per-Ludvig Börje Nordmark

A proposed spread spectrum signal receiver includes a radio front-end unit and a processing unit. The radio front-end unit, in turn, has an antenna, a digitizing circuit and a primary buffer unit. The antenna is adapted to receive radio signals (S) from a plurality of signal sources, and the digitizing circuit is adapted to downconvert and filter the received signals (S), and generate sample values (S) thereof. The primary buffer unit is adapted to temporarily store the sample values (S) from the digitizing circuit and allow the processing unit to read out a first set of stored sample values (S) contemporaneously with the storing of a second set of sample values (S) in the primary buffer unit. The processing unit is adapted to receive the sample values (S) from the primary buffer unit, and based thereon, produce position/time related data (D).

Spread spectrum signal receiver

The apparatus generates at least one high-accuracy navigation parameter (P, V, A) by means of a relative sensor system and a radio receiver system. The relative sensor system registers relative movements of the apparatus and produces at least one relative data signal (&#x394;v, &#x394;&#x3b8;). The radio receiver system receives navigation data signals (RF) from a plurality of external signal sources and produces at least one tracking data signal (I, Q). The radio receiver system includes a central processing unit realized in a software module. A common clock unit produces a first clock signal to form a sampling basis in the radio receiver system and a second clock signal to form a sampling basis in the relative sensor system, where the clock signals are mutually synchronous. Data return loops may be closed in the common software module both with respect to the radio receiver system and the relative sensor system to achieve ultra-tight coupling of the two systems.

Growing community of inventors

Lulea, Sweden

Jonas Paul Thor