Procedure and device for the control of a radar unit

Procedure for controlling a radar unit in order to make possible the transmission of information from the radar with simultaneous radar function using the radar unit's radar pulses, wherein the procedure comprising:

• a control stage in which the number of pulse groups that must be transmitted in order to retain a correct ordinary radar function is determined and in which the times of transmission of the radar pulses of the pulse groups are determined whereby an information coding of the information that is to be transmitted is carried out by a pulse group position coding where all the radar pulses of at least one pulse group are position coded in such a way that the radar pulses of the pulse group are transmitted with retained ordinary radar function.

Procedure for receiving and information decoding radar pulses in an information receiver and thereby recreating an information copy of the information that was encoded and transmitted by a radar device, the procedure comprising:

• a pulse repetition frequency calculation stage in which the pulse repetition frequency of radar pulses received is calculated;
• a calculation stage in which the information copy is calculated from one or more calculated pulse repetition frequencies.

Pulse radar device for transmitting information together with its ordinary radar function, the pulse radar device comprising a control unit, a radar transmitter, a radar receiver and an antenna, in which the control unit is configured to control the radar transmitter to generate radar pulses that are transmitted via the antenna, and is configured in conjunction with the controlling of the radar transmitter to control the radar receiver to receive target echo signals of the transmitted radar signals via the antenna for target detection and measurement of target data, and the control unit is also configured to information code the radar pulses in at least one pulse group with the information that is to be transmitted by controlling the radar transmitter and the radar receiver so that all of the radar pulses of a pulse group are position coded in such a way that the radar pulses of the pulse group are transmitted with retained ordinary radar function.

Information receiver for receiving and information decoding radar pulses in pulse groups and thereby recreating in the form of an information copy information that has been encoded and transmitted by a radar device, where the information receiver comprises an antenna, a receiver and a decoder, in which the receiver is configured to receive radar pulses via the antenna and to convert the radar pulses to signals modified for the decoder, and to pass these modified signals to the decoder, and the decoder is for each received pulse group configured to calculate the time displacement of each radar pulse received relative to a corresponding calculated expected radar pulse position and the decoder is also configured to be able to identify from the pulse groups received what type of information coding the radar device uses to encode the information that is transmitted and the decoder from one or more calculated time displacements and from the identified information coding calculates and recreates the information that was encoded and transmitted by the radar device.

Information receiver for receiving and information decoding radar pulses in pulse groups and thereby recreating in the form of an information copy information that has been encoded and transmitted by a radar device, the information receiver comprising an antenna, a receiver and a decoder, whereby the receiver is configurated to receive radar pulses via the antenna and to convert the radar pulses to signals modified for the decoder, and to pass these modified signals to the decoder, and the decoder is configured to calculate a pulse repetition frequency for each pulse group received and to thereafter calculate the information copy from one or more calculated pulse repetition frequencies and to thereby recreate the information that was encoded and transmitted by the radar device.