Test system and method of testing follower jammer robustness of a radio

Patent metadata

Field	Value
Publication number	US-11057126-B2
Application number	US-201916717891-A
Country	US
Kind code	B2
Filing date	Dec 17, 2019
Priority date	Dec 19, 2018
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

A test system for testing follower jammer robustness of a radio is described. The test system comprises a signal analyzer and a signal generator that are connected with each other via a communication connection. The signal analyzer is configured to record a radio communication signal and to convert the recorded radio communication signal to a processing signal that is compatible for the communication connection. The signal generator is configured to add at least one delayed signal to the processing signal. Further, a method of testing follower jammer robustness of a radio is described.

First claim

The invention claimed is:

1. A test system for testing follower jammer robustness of a radio, comprising:
a signal analyzer and a signal generator that are connected with each other via a communication connection, wherein the signal analyzer is configured to record a radio communication signal, to analyze the radio communication signal, and to convert the recorded radio communication signal to a processing signal that is compatible for the communication connection, wherein the signal generator is configured to add at least one delayed signal to the processing signal such that the signal generator outputs a testing signal that corresponds to the at least one delayed signal and the processing signal, thereby enabling the test system to test follower jammer robustness.

2. The test system according to claim 1 , wherein the signal generator comprises an operator interface via which the operator is enabled to adjust a delay.

3. The test system according to claim 1 , wherein the signal generator comprises an operator interface via which the operator is enabled to predetermine a delay for the at least one delayed signal.

4. The test system according to claim 1 , wherein the signal generator is configured to receive the processing signal via the communication connection.

5. The test system according to claim 1 , wherein the signal generator is configured to add fading to the processing signal.

6. The test system according to claim 1 , wherein the signal generator is configured to add fading to the at least one delayed signal.

7. The test system according to claim 1 , wherein a transmitting radio is provided that is connected to an input of the signal analyzer.

8. The test system according to claim 7 , wherein the test system comprises at least one amplitude adjustment member that is connected between the transmitting radio and the signal analyzer.

9. The test system according to claim 1 , wherein a receiving radio is provided that is connected to an output of the signal generator.

10. The test system according to claim 9 , wherein the test system comprises at least one amplitude adjustment member that is connected between the receiving radio and the signal generator.

11. The test system according to claim 1 , wherein the communication connection is at least one of a digital communication connection, an analog communication connection and an IQ data communication connection.

12. The test system according to claim 1 , wherein the signal analyzer is configured to receive the radio communication signal via at least one of a cabled connection and a wireless connection.

13. A method of testing follower jammer robustness of a radio, comprising:
providing a signal analyzer and a signal generator;
connecting the signal analyzer to the signal generator via a communication connection;
recording a radio communication signal via the signal analyzer;
analyzing the radio communication signal via the signal analyzer;
converting the recorded radio communication signal to a processing signal that is compatible for the communication connection;
adding at least one delayed signal to the processing signal via the signal generator; and
outputting a testing signal that corresponds to the at least one delayed signal and the processing signal via the signal generator, thereby enabling the test system to test follower jammer robustness.

14. The method according to claim 13 , wherein the processing signal is forwarded to the signal generator via the communication connection.

15. The method according to claim 13 , wherein a delay for the at least one delayed signal is adjusted and/or predetermined manually.

16. The method according to claim 13 , wherein the recorded radio communication signal and/or the at least one delayed signal is faded.

17. The method according to claim 13 , wherein a receiving radio is connected to an output of the signal generator and/or a transmitting radio is connected to an input of the signal analyzer.

Assignees

• Rohde & Schwarz

Inventors

• Pai Klaus
• Grasberger Erich

Classifications

• H04K3/25

  based on characteristics of target signal or of transmission (as countermeasure against surveillance H04K3/827), e.g. using direct sequence spread spectrum or fast frequency hopping (spread spectrum techniques H04B1/69) · CPC title

• H04K3/45 Primary

  characterized by including monitoring of the target or target signal, e.g. in reactive jammers or follower jammers for example by means of an alternation of jamming phases and monitoring phases, called "look-through mode" · CPC title

• H04K3/46

  characterized in that the jamming signal is produced by retransmitting a received signal, after delay or processing · CPC title

• H04B17/345

  Interference values ({signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]} H04B17/336) · CPC title

• H04B17/3911

  Fading models or fading generators · CPC title