Differences

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

--- en:sdrx [2013/07/26 09:41] – [FAQ] fluktuacia
+++ en:sdrx [2013/07/26 10:16] – [UHF SDR SDRX02A receiver] fluktuacia
@@ Line 300: / Line 300: @@
-{{ :cs:sdr:radioasronomy_configuration.png?300 |A configuration suitable for phase processing of the signals coming from more antennae}}
+{{ :cs:sdr:radioasronomy_configuration.png?300 |A configuration suitable for a phase processing of signals coming from more antennae}}
 The radioastronomy is quite perspective field for the deployment of this receiver and a large portion of research is currently devoted to it.
-It's also good to point out, that amateur astronomers have a greater chance of success in the field of radio- than optic astronomy. In order to get results, radioastronomers need a lot of stations over a large area and that is easier to achieve for independent individuals than for organisation.
+It's also good to point out, that amateur astronomers have a greater chance of success in the field of radio- than optic astronomy. In order to get results, radioastronomers need a lot of stations over a large area and that is easier to achieve for independent individuals than for organization.
-An example of project, that supports this notion is eg. [[http://www.lofar.org/|LOFAR]].
+An example of a project, that supports this notion is [[http://www.lofar.org/|LOFAR]].
 ===== Radio meteor detection stations =====
-The receiver is suitable for use in the radio meteor detection network, as is the case of several observatories in CR.  [[http://www.astrozor.cz/index.php|The map of observation points.]] The receiver than works as a part of a radar.
+The receiver is suitable for use in a radio meteor detection network, as is the case of several observatories in CR.  [[http://www.astrozor.cz/index.php|The map of observation points.]] The receiver works here as a part of a radar.
 {{:cs:designs:metor_shower.jpg?200|}}
@@ Line 333: / Line 333: @@
 ====== Ideas for improvements ======
-  * <del> To add a logarithmic scalar output indicating "the extent of saturation of the receiver". </del> The logarithmic detector for measuring of the integral output through the input band of the receiver. (Possibly can be done with RF detector [[en:rfdetect|RFdetect01A]]).
+  * <del> To add a logarithmic scalar output indicating "the extent of the receiver's saturation". </del> The logarithmic detector for measuring of the integral output through the input band of the receiver. (Possibly can be done with RF detector [[en:rfdetect|RFdetect01A]]).
-  * To add a module with a suitable ADC and so eliminate the complications with the funcioning of the suitable sound card.
+  * To add a module with a suitable ADC and so eliminate the complications with the functioning of the suitable sound card.
-  * <del> To desing module with a galvanically separated symmetrical power supply. </del> Solved by [[cs:sympower|SYMPOWER01A]]  module.
+  * <del> To design a module with a galvanically separated symmetrical power supply. </del> Solved by [[cs:sympower|SYMPOWER01A]]  module.
   * To figure out a way to compare the gain between the individual receivers. (preferably digitally)
@@ Line 343: / Line 343: @@
 Adding more modules to the arrangement could create a complete set where the receiver would be independent on a computer. Its realisation has several variants:
-  * The receiver with a tunable oscillator and module with LDC that would show the tuned frequency. The buttons below the LCD would allow the retuning of the receiving frequency.
+  * The receiver with a tunable oscillator and a module with LDC that would show the tuned frequency. The buttons below the LCD would allow the retuning of the receiving frequency.
-  * A second variant would be the same as the first one, with an exception of digitising the analog output, that would be transmitted through some kind of a common interface to a computer (USB, ThunderBolt, Ethernet, ...). The same interface could be used for LO tuning as well.
+  * A second variant would be the same as the first one, with an exception of digitizing the analog output, that would be transmitted through some kind of a common interface to a computer (USB, ThunderBolt, Ethernet, ...). The same interface could be used for LO tuning as well.
 ====== UHF SDR SDRX02A receiver ======
-**The design of the receiver described below is still only in preliminary stage of development**
+**The design of the receiver described below is still only in a preliminary stage of development**
-The design should probably be even more modular. That includes separate VGA input amplifier, input band-pass filter, I/Q demodulator with input band-pass filter.
+The design should probably be even more modular. That includes a separate VGA input amplifier, an input band-pass filter, an I/Q demodulator with an input band-pass filter.
-ACD with parallel anti-alias filter and FPGA with parallel USB interface.
+ACD with a parallel anti-alias filter and FPGA with a parallel USB interface.
@@ Line 373: / Line 373: @@
 **The design of the receiver described below is still only in preliminary stage of development**
-The design should include separate input amplifier (VGA), input band-pass filter to limit the possible intermodulation, I/Q demodulator with input band-pass filter.
+The design should include a separate input amplifier (VGA), an input band-pass filter to limit the possible intermodulation, an I/Q demodulator with an input band-pass filter.
-Analog Frond End ADC with input anti-alias filter and FPGA with PCIe interface for connection to the thunderbolt module.
+Analog Frond End ADC with input an anti-alias filter and FPGA with a PCIe interface for connection to the thunderbolt module.