Electricity: measuring and testing – Magnetic – Displacement
Patent
1991-09-24
1992-12-01
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
89 4119, 32420712, 32420725, 324247, 34087032, 364559, F41G 100, F41G 900, G01B 730, G01B 1500
Patent
active
051682222
ABSTRACT:
The system comprises a radiator, a sensor (21) fixed to the moving object, a circuit for processing the signals from the sensor in order to determine their amplitudes and a computation processor with a base of processing algorithms. The system also has a multiplexer (24) for sequentially multiplexing on one channel the detector signals from the sensor (21), a device (25) for sampling the signal coming from the multiplexer (24), of amplitude A and pulsation .omega., multipliers (30, 31) for multiplying the samples from the sampling device (25) respectively by reference signals .omega.t and cos .omega.t and accumulates (33, 35, 34, 36) for accumulating the two sums of the products of the multiplications for a period at least equal to a period ##EQU1## before supplying them to the computation processor (22), which extracts from them the amplitude A.
The systrem can be applied well to a helmet aiming device.
REFERENCES:
patent: 4054881 (1977-10-01), Raab
patent: 4560930 (1985-12-01), Kouno
patent: 4635207 (1987-01-01), Payne
patent: 4673878 (1987-06-01), Tsushima et al.
patent: 4688037 (1987-08-01), Krieg
patent: 4829250 (1989-05-01), Rotier
Monin Pascal
Volsin Gerard
Sextant Avionique
Strecker Gerard R.
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