Navigation method and apparatus
First Claim
1. A navigation apparatus for generating at least one high-accuracy navigation parameter (P, V, A) comprising:
- a relative sensor system (200) adapted to register relative movements of the apparatus and in response thereto produce at least one relative data signal (Δ
v, Δ
θ
), and a radio receiver system (100) adapted to receive navigation data signals (RFGNSS) from a plurality of external signal sources and based thereon produce at least one tracking data signal (IGNSS, QGNSS), the radio receiver system (100) including a central processing unit (140) adapted to receive the at least one tracking data signal (IGNSS, QGNSS), receive the at least one relative data signal (Δ
v, Δ
θ
), and based on the received signals produce the at least one navigation parameter (P, V, A), characterized in that the apparatus comprises;
a common clock unit (300) adapted to produce a first clock signal (CL1) to form a sampling basis in the radio receiver system (100) and a second clock signal (CL2) to form a sampling basis in the relative sensor system, and a common software module (400) adapted to realize at least one function (130, 140) of the radio receiver system (100) and at least one function (230) of the relative sensor system (200).
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Accused Products
Abstract
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 (Δv, Δθ). The radio receiver system receives navigation data signals (RFGNSS) from a plurality of external signal sources and produces at least one tracking data signal (IGNSS, QGNSS). 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.
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Citations
15 Claims
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1. A navigation apparatus for generating at least one high-accuracy navigation parameter (P, V, A) comprising:
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a relative sensor system (200) adapted to register relative movements of the apparatus and in response thereto produce at least one relative data signal (Δ
v, Δ
θ
), anda radio receiver system (100) adapted to receive navigation data signals (RFGNSS) from a plurality of external signal sources and based thereon produce at least one tracking data signal (IGNSS, QGNSS), the radio receiver system (100) including a central processing unit (140) adapted to receive the at least one tracking data signal (IGNSS, QGNSS), receive the at least one relative data signal (Δ
v, Δ
θ
), and based on the received signals produce the at least one navigation parameter (P, V, A), characterized in that the apparatus comprises;
a common clock unit (300) adapted to produce a first clock signal (CL1) to form a sampling basis in the radio receiver system (100) and a second clock signal (CL2) to form a sampling basis in the relative sensor system, and a common software module (400) adapted to realize at least one function (130, 140) of the radio receiver system (100) and at least one function (230) of the relative sensor system (200). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of generating at least one high-accuracy navigation parameter (P, V, A), comprising the steps of:
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producing a first clock signal (CL1), producing a second clock signal (CL2) on basis of the first clock signal (CL1) such that the rate of the second clock signal (CL2) is synchronous with the rate of the first clock signal (CL1), registering relative spatial movements and in response thereto producing at least one analog sensor signal (Asense), sampling the at least one analog sensor signal (Asense) on basis of the second clock signal (CL2) to produce corresponding at least one digital sensor signal (Dsense) receiving radio navigation data signals (RGNSS) from a plurality of external signal sources, sampling the radio navigation data signals (RGNSS) on basis of the first clock signal (CL1) to produce a corresponding digital navigation data signal (IFGNSS), receiving the at least one digital sensor signal (Dsense) and the digital navigation data signal (IFGNSS) in a common software module, and processing synchronously the at least one digital sensor signal (Dsense) and the digital navigation data signal (IFGNSS) in the common software module to produce the at least one navigation parameter (P, V, A).
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Specification