US 2014/0229100 A1Published application

System and method for aircraft navigation assistance

AssigneeDassault Aviation

InventorPierre MARCON

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Abstract

This aircraft navigation assistance system comprises an inertial navigation module adapted for providing first positional information from accelerometric and gyrometric measurements, and a module adapted for determining second positional information from satellite positioning data. The system is characterized in that it comprises means for estimating a first localization of the aircraft at a time of estimation on the basis of first positional information determined from accelerometric and gyrometric measurements at said time of estimation and second positional information determined from positioning data received prior to said time of estimation, said first localization being determined independently from any positioning data received in a time interval preceding said time of estimation, advantageously equal to a time to alert.

Claims15

Dependent claims

A navigation assistance system to be used on board an aircraft, comprising:

an inertial navigation module, adapted for providing first aircraft positional information resulting at least partially from accelerometric and gyrometric measurements,
a satellite positioning module, comprising at least one satellite navigation data receiver, said positioning module being adapted for determining second aircraft positional information from satellite positioning data received by said satellite navigation data receiver,
said system comprising estimation means adapted for estimating a first localization of the aircraft at a given time of estimation on the basis of:
first aircraft positional information, resulting at least partially from accelerometric and gyrometric measurements at said time of estimation, and
second aircraft positional information, determined from satellite positioning data received by said satellite navigation data receiver prior to said time of estimation,
said first localization being determined independently from any satellite positioning data received in a predetermined time interval preceding said time of estimation and including said time of estimation, said predetermined time interval being advantageously equal to a time to alert.

3 more elements

A method of aircraft navigation assistance, comprising, in at least a first phase of flight of the aircraft, a step of estimating a first localization of the aircraft at a given time of estimation comprising:

a phase of determining first positional information of the aircraft, resulting at least partially from accelerometric and gyrometric measurements of an inertial navigation center at said time of estimation;
a phase of determining second positional information of the aircraft, from satellite positioning data received by a satellite navigation data receiver prior to said time of estimation;
and
a phase of estimating said first localization of the aircraft on the basis of said first and second positional information, said first localization being estimated independently from any satellite positioning data received at a predetermined time interval preceding said time of estimation and including said time of estimation, said predetermined time interval being advantageously equal to a time to alert.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/174,728Filed 6 Feb 2014
Priority: FR 13002888 Feb 2013
Published: 14 Aug 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G01C 21/12
By using measurements of speed or acceleration: executed aboard the object being navigated; Dead reckoning
G01C 21/165
By integrating acceleration or speed, i.e. inertial navigation: combined with non-inertial navigation instruments
G01S 19/49
By combining or switching between position solutions derived from the satellite radio beacon positioning system and position solutions derived…:…
G01C
Measuring distances, levels or bearings