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US 2023/0408666 A1Published application
Method for one-sided radio-based distance measurement
AssigneeLambda:4 Entwicklungen GmbH
InventorRönne REIMANN
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AssigneeLambda:4 Entwicklungen GmbH
InventorRönne REIMANN
Estimating the term…
A method for one-sided radio-based distance measurement. The object is to speed up the determination of the distance between a first object and a second object, to enable greater accuracy and/or to enable or improve the determination, even in the event of interference, particularly in the case of one-sided and/or asymmetric interference in the radio connection. The method is carried out largely without radio signals in a transmission direction. The method includes use of a transit time measurement between the first object and the second object to eliminate the ambiguity of the distance measurement; the distance measurement being carried out on the basis of a change in the phase shift, in particular relative to the frequency change, of the signal propagation from the first object to the second object as a result of a frequency change.
A method for distance determination between at least two objects, wherein the at least two objects are or will be time- or clock-cycle-synchronized, and wherein a first object of the at least two objects emits at least one signal on each of a first frequency and a second frequency, and a second object of the at least two objects receives the at least one signal of the first object and carries out phase measurements on them, wherein the first object changes between the first frequency and the second frequency in a phase-coherent manner with a phase jump of zero, or changes so that upon changing frequencies, the phase jump is known or determined upon transmission, and the distance between the first object and the second object is determined from the phase change caused by the frequency change from the first frequency to the second frequency, and that ambiguity of the distance determination is eliminated by means of a time-of-flight measurement by means of the knowledge of at least one point in time at which the emission of features of the at least one signal took place.
A use of a time-of-flight measurement between a first object and a second object for eliminating the ambiguity of a distance measurement, wherein for the purpose of the distance measurement, the first object emits at least one signal on each of a first and a second frequency, wherein the distance measurement is carried out on the basis of the change in the phase shift of the signal propagation from the first object to the second object as a result of a frequency change.
Dependencies are inferred from the claim text.