Method for tracking a transmitter by means of a synthetic sparse antenna network
First Claim
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1. A method of locating one or more transmitters on the basis of an array of sensors moving with respect to the transmitters, comprising at least the following steps for an m-th transmitter of the transmitters:
- determining a direction vector â
km corresponding to the response of the array of sensors to a source with incidence (θ
, Δ
) as a function of the incidence parameters θ
, Δ
, and of an unknown parameter ρ
related to the distortion of the phases on the sensors,transforming the direction vector so as to eliminate the unknown parameter ρ
, into a transformed direction vector,using the transformed direction vector to obtain the position of the transmitter using a maximized locating criterion;
wherein the transformation step comprises at least the following steps;
choosing a reference instant i, andconstructing the transformed direction vector ĉ
′
km whose components correspond to the ratio of the components between the given instant k and the instant i
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Abstract
Method of locating one or more transmitters on the basis of an array of sensors moving with respect to the transmitters comprising at least the following steps:
- determining the direction vectors âk corresponding to the response of the array of sensors to a source with incidence (θ, Δ) as a function of the incidence parameters θ, Δ, and of the parameter ρ related to the distortion of the phases on the sensors,
- transforming this vector âk so as to eliminate the unknown parameter ρ, into a vector ĉkm, ĉ′km,
- using the transformed vector to obtain the position of the transmitter using a maximized locating criterion.
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Citations
12 Claims
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1. A method of locating one or more transmitters on the basis of an array of sensors moving with respect to the transmitters, comprising at least the following steps for an m-th transmitter of the transmitters:
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determining a direction vector â
km corresponding to the response of the array of sensors to a source with incidence (θ
, Δ
) as a function of the incidence parameters θ
, Δ
, and of an unknown parameter ρ
related to the distortion of the phases on the sensors,transforming the direction vector so as to eliminate the unknown parameter ρ
, into a transformed direction vector,using the transformed direction vector to obtain the position of the transmitter using a maximized locating criterion; wherein the transformation step comprises at least the following steps; choosing a reference instant i, and constructing the transformed direction vector ĉ
′
km whose components correspond to the ratio of the components between the given instant k and the instant i - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of locating one of more transmitters on the basis of an array of sensors moving with respect to the transmitters which comprises at least the following steps:
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receiving signals from at least one of the transmitters by the sensors and determining a direction vector â
km;choosing a reference channel or sensor and constructing a vector b(tK,xm,zm,ρ
) whose components correspond to the ratio of 2 channels according to the received signals, where m denotes the m-th transmitter of the transmitters;
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9. A method of locating one of more transmitters on the basis of an array of sensors moving with respect to the transmitters, comprising at least the following steps for an m-th transmitter of the transmitters:
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receiving signals from at least on of the transmitters by the sensors; using the received signals to construct a direction vector;
â
km(ρ
)=a(θ
k, Δ
k, ρ
)+ekmconstructing a vector {circumflex over (b)}km of dimension (N−
1)*1 - View Dependent Claims (10, 11, 12)
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Specification