Symmetrical Multi-Path Method For Determining the Distance Between Two Transmitter-Receivers
First Claim
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1. Method for determining the spatial distance between two transmitter-receivers within a distance range in the order of magnitude of 10 km,in which both transmitter-receivers set off respectively at least one signal round, a signal round comprising the following steps:
- a) transmitting at least one request data frame, containing a sequence of at least two signal pulses with a predetermined pulse time interval, from a first transmitter-receiver setting off the signal round to a second transmitter-receiver at a request transmitting time (TTA1, TTB2),b) receiving the request data frame at the second transmitter-receiver at a request receiving time (TRB1, TRA2),c) transmitting a reply data frame, containing a sequence of at least two signal pulses with a predetermined pulse time interval, from the second transmitter-receiver to the first transmitter-receiver at a reply transmitting time (TTB1, TTA2), which has a respective reply time interval (TreplyB1, TreplyA2) from the request receiving time (TRB1, TRA2), and detecting the respective reply time interval,d) receiving the reply data frame at the first transmitter-receiver setting off the signal round and detecting a reply receiving time (TRA1, TRB2), allocated to the receipt of the reply data frame, relative to the request transmitting time (TTA1, TTB2),at which an evaluation is carried out comprising the following steps;
e) ascertaining a round time interval (TroundA1, TroundB2) between the respective request transmitting time (TTA1, TTB2) and the respective reply receiving time (TRA1, TRB2) for each signal round, this step being able to be performed at any time after the relevant signal round,f) ascertaining a signal transit time (Tprop) between the two transmitter-receivers using the ascertained round time intervals (TroundA1, TroundB2) and the reply time intervals (TreplyB1, TreplyA2) andg) ascertaining the spatial distance between the first and second transmitter-receivers by multiplying the signal transit time (Tprop) by a previously known propagation speed of the signal pulses,and in which the signal rounds are performed in such a way that the reply time intervals (TreplyA2, TreplyB1) are either identical or have a difference, in the case of performing more than one signal round set off by each transmitter-receiver an average difference, the amount of which is a maximum of 200 microseconds.
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Abstract
The invention relates to a symmetrical multi-path method for determining the spatial distance between two transmitter-receivers. Both transmitter-receivers set off at least one signal round in each case. A signal round comprises the steps:
- a) transmitting at least one request data frame of a first transmitter-receiver to a second transmitter-receiver at a request transmitting time (TTA1, TTB2),
- b) receiving the request data frame at the second transmitter-receiver at a request receiving time (TRB1, TRA2),
- c) transmitting a reply data frame from the second transmitter-receiver to the first transmitter-receiver at a reply transmitting time (TTB1, TTA2), which has a respective reply time interval (TreplyB1, TreplyA2) from the request receiving time (TRB1, TRA2) and detecting the reply time interval,
- d) receiving the reply data frame at the first transmitter-receiver setting off the signal round and detecting an allocated reply receiving time (TRA1, TRB2).
The signal rounds are performed in such a way that the reply time intervals (TreplyA2, TreplyB1) are either identical or have a difference, in the case of performing more than one signal round set off by each transmitter-receiver an average difference, the amount of which is a maximum of 200 microseconds.
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Citations
68 Claims
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1. Method for determining the spatial distance between two transmitter-receivers within a distance range in the order of magnitude of 10 km,
in which both transmitter-receivers set off respectively at least one signal round, a signal round comprising the following steps: -
a) transmitting at least one request data frame, containing a sequence of at least two signal pulses with a predetermined pulse time interval, from a first transmitter-receiver setting off the signal round to a second transmitter-receiver at a request transmitting time (TTA1, TTB2), b) receiving the request data frame at the second transmitter-receiver at a request receiving time (TRB1, TRA2), c) transmitting a reply data frame, containing a sequence of at least two signal pulses with a predetermined pulse time interval, from the second transmitter-receiver to the first transmitter-receiver at a reply transmitting time (TTB1, TTA2), which has a respective reply time interval (TreplyB1, TreplyA2) from the request receiving time (TRB1, TRA2), and detecting the respective reply time interval, d) receiving the reply data frame at the first transmitter-receiver setting off the signal round and detecting a reply receiving time (TRA1, TRB2), allocated to the receipt of the reply data frame, relative to the request transmitting time (TTA1, TTB2), at which an evaluation is carried out comprising the following steps; e) ascertaining a round time interval (TroundA1, TroundB2) between the respective request transmitting time (TTA1, TTB2) and the respective reply receiving time (TRA1, TRB2) for each signal round, this step being able to be performed at any time after the relevant signal round, f) ascertaining a signal transit time (Tprop) between the two transmitter-receivers using the ascertained round time intervals (TroundA1, TroundB2) and the reply time intervals (TreplyB1, TreplyA2) and g) ascertaining the spatial distance between the first and second transmitter-receivers by multiplying the signal transit time (Tprop) by a previously known propagation speed of the signal pulses, and in which the signal rounds are performed in such a way that the reply time intervals (TreplyA2, TreplyB1) are either identical or have a difference, in the case of performing more than one signal round set off by each transmitter-receiver an average difference, the amount of which is a maximum of 200 microseconds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68)
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Specification