Christian Petitjean

Title: Christian Petitjean: Innovator in Radar Technology

Introduction

Christian Petitjean is a notable inventor based in Boulogne-Billancourt, France. He has made significant contributions to the field of radar technology, holding two patents that showcase his innovative approach to solving complex problems in this domain.

Latest Patents

His latest patents include a process for the protection of a radar against jamming and a coherent radar system. The first patent describes a method where a pseudo signal is transmitted alongside the useful signal. This pseudo signal has a higher amplitude than the useful signal, allowing countermeasure devices to latch onto it while ignoring the useful signal. The frequency of the pseudo signal is distinct enough to ensure that jamming signals are effectively rejected by the radar receiver's intermediate frequency amplifier. The second patent outlines a coherent radar system that features separate transmitting and receiving chains. This system utilizes a master oscillator and multiple multipliers to generate coherent signals, which are then mixed and processed to produce a radar display.

Career Highlights

Christian Petitjean works at LMT Radioprofessionnelle, where he continues to develop innovative radar technologies. His work has been instrumental in advancing the capabilities of radar systems, particularly in enhancing their resistance to jamming.

Collaborations

He collaborates with notable colleagues, including Guy L Parquier and Maurice Marchand, who contribute to the innovative environment at LMT Radioprofessionnelle.

Conclusion

Christian Petitjean's contributions to radar technology through his patents reflect his commitment to innovation and excellence in engineering. His work not only enhances radar systems but also sets a foundation for future advancements in the field.