Differences

This shows you the differences between two versions of the page.

--- history [2026/03/27 13:34] – [pNav Milestones] pkovar
+++ history [2026/03/31 10:08] (current) – pkovar
@@ Line 1: / Line 1: @@
 ===== pNav History =====
-The pNav GPS receiver project began in 2013. My doctoral student, Ondrej Jakubov, proposed using a Witch Navigator for positioning the small satellite. The CubeSat project started at the Czech Technical University in Prague as a student initiative. The student planned to participate in the QB50[[https://cordis.europa.eu/project/id/284427/reporting]]  CubeSat constellation competition. I appreciated this initiative, as our university has launched a new aerospace study program in which I was responsible for teaching radio navigation and radio communication topics.
+The pNav GPS receiver project began in 2013. My doctoral student, Ondrej Jakubov, proposed using a Witch Navigator for positioning the small satellite. He was one of the students who started student CubeSat project at the Czech Technical University in Prague. The student planned to participate in the QB50[[https://cordis.europa.eu/project/id/284427/reporting]] CubeSat constellation competition. I appreciated this initiative, as our university has launched a new aerospace study program in which I was responsible for teaching radio navigation and radio communication topics.
-Unfortunately, we have not received any support for the satellite project, and the student team has consequently disbanded. There are only two people left, Jaroslav Laifer and me. We continue with a CubeSat project at our own expense. The project has resulted in the successful launch of the Lucky 7 CubeSat in June 2019.
+Unfortunately, we have not received any support for the project, and the student team has consequently disbanded. There are only two people left, Jaroslav Laifer and me. We continue with a CubeSat project at our own expense. The project has resulted in the successful launch of the Lucky 7 CubeSat in June 2019.
 ==== pNav is not a Witch Navigator ====
@@ Line 11: / Line 11: @@
 At that time, I had defined the following high-level requirements on the new navigation receiver for a CubeSat that I respected for all years of development of the pNav receiver:
-  * The CubeSat navigation receiver should be as simple as possible and integrate all necessary parts for navigation in the LEO Orbit.
+  * The CubeSat navigation receiver should be as simple as possible.
+  * It should integrate all necessary parts for navigation in the LEO Orbit
   * It should be compatible with a 1U CubeSat platform, ie, power consumption should be a fraction of the power budget of 1U satellite. The receiver should be small and light.
   * The applied signal and measurement processing algorithms should be simple and very robust
@@ Line 17: / Line 18: @@
 ==== pNav Milestones ====
-pNav receiver was developed from the beginning as a private and private founding project at my private laboratory in our house.
+pNav receiver was developed from the beginning as a private, and private founding project at my private laboratory in our house.
 The receiver is marketed by the company SkyFox of Jaroslav Laifr.
@@ Line 27: / Line 28: @@
   * **2018: Buying a implementation of a GPS software simulator ReGen** by IPSolutios.
+  * **2021: New Acquisition Unit ** that can operate in parallel with the correlators has been developed. It required a larger FPGA, which was incompatible with pNav's manufacturing capability.
   * **2022: Application of the orbital position propagator** with the aim of overcoming GPS position dropout and improving the receiver reacquisition.
-  * 2026: Last update of the original pNav of Almanach memory
+  * **2026: Last update of the original pNav of Almanach memory**
-  * 2026: Introduction of pNav2 [[Start|pNav2]]
+  * **2026: Introduction of [[Start|pNav2]]**
-<columns 70% - ->
+<columns 100% 50% - ->
 === Strenans ===
+  * **Long lifetime** in LEO thanks to the conservative design and conservative selection of the components
+  * **Matured design **
+  * **Heritage** in Laucy 7 CubeSat and satellites of our customers
-  * **Long lifetime** in LEO thanks to the conservative design and selection of the components
-  * **Heritage** ij Laucy 7 CubeSat and satellites of our costumers.
 <newcolumn>
 === Weekness ===
-  * **Problematic acquisition and reaqusition** doe to the low performance signal processor
+  * **Problematic acquisition and reaqusition** due to the low performance signal processor. The receiver reaquisition in the ideal case lasts tens of minutes
+  * **Non-configurable NMEA protocol**
 </columns>
@@ Line 51: / Line 56: @@
 ==== Conclusion ====
-Further development of pNav is not possible without solveing of the satellite problem.
+Further development of pNav is not possible without upgrading the acquisition unit, which will work in parallel with GPS correlators.