rtl2832u sdr

0x00 PrefaceGNSS is an abbreviation for the Global Navigation satellite system. Chinese is called: Global satellite navigation system, global navigation satellite system.GNSS refers to all satellite navigation systems, including global, regional and enhanced, such as the U.S. GPS, Russian GLONASS, European Galileo, China's Beidou satellite navigation system, and related enhancement systems, such as the United States of WAAS (wide area enhancement system), Europe's EGNOS (European static navigati

satellite navigation system (GPS) Galileo-E1 and GPS-L1 links is 1575.42 MHz, and the E400 tuner chip can cover this band. We can configure the GNSS-SDR and use RTL2832U as the real-time signal source to provide a low-cost option for building a GPS-L1 signal receiver (dozens ). This article describes operation details and some performance tests about the new feature of GNSS-

This article was written by Taylor Killian on his blog in August 13. He contrasted the three parity SDR platforms, thinking that the three products would be the most popular SDR platform of the coming year. I think this article is very valuable for reference, a simple translation of a turn around.The original is here:Http://www.taylorkillian.com/2013/08/sdr-showd

0x00 written at the beginningRecently, the discovery of crazy Danish hacker on YouTube released a very good tutorial video: Use SDR sniffing visits to listen to GSM network traffic (GSM sniffing Teaser–software Defined Radio Series). This tutorial is illustrated in detail from the installation of a TV stick to scanning, the use of sniffer tools, and the capture and decryption of GSM traffic packets:As a porter, here will be divided into two or three p

1. SDR descriptionSpring Data Redis (SDR), a set of simplified access to Redis APIs provided by Springframework, is another layer of encapsulation for Jedis.The SDR integrates the four open-source Redis Connector of Jedis,jredis,srp,lettuce, all of which are open source Java libraries for Redis. Among them, Jredis and SRP start from spring-data-redis1.7, it is no

Tags: sampling parameters Enter ENC Compare Direct circuit board enable AnnHardware PreparationAntenna: A dangling long-distance antenna, if only temporary use, directly with the ordinary 0.75 square PVC multi-stranded soft wire can be.Baron: 9:1 BarronReceiver: Q Channel adds RTL-SDR receiver for low frequency inputand the corresponding connection cable.ReceiverThe front and back of the circuit board, the connecting head is SMA, the outer screw inner

Objective: To set up an SDR server, through the terminal can connect to the Server to operate on its SDR, to achieve remote operation of the station, so as not to be affected by the antenna, the antenna hanging in the sun the most non-partner place, find a cool to hold the computer listening to the radio. Client scenario 1:RTL-SDR + gqrx/

easy to click on the wrong spot: Errors caused by the spring version too low"Environment Parameters"Redis version: Redis-2.4.5-win32-win64Spring Original version: 4.1.7.RELEASESpring Modified version: 4.2.6.RELEASE"Description of the barrier"Question:nosuchmethoderrorInvocation of Init method failed; Nested exception is java.lang.NoSuchMethodError:Org.springframework.core.serializer.support.deserializingconverter."Cause analysis"Cause: Spring version is too lowIn the

This project uses Raspberry Pi with ultra-low-cost software radio (SDR) hardware to receive tracking information sent from an airborne S-mode transponder outside millions of miles. The Raspberry Pi is equipped with a smart 3.5-inch TFT display to provide a convenient overview of aircraft activities. HardwareThe rtl2832u-based small SDR receiver (124-5461) i

"shadow". The device used to replay the demo is a wireless control switch, which is more common in Europe, and it can remotely control the opening and closing of electrical appliances in a wireless manner.The device looks like this:In short, the signal is transmitted from the transmitting side to the receiving end in a non-zero encoded way, and then the receiving end decodes the signal and processes it. The non-zero code is a binary code: ' 1 ' Code positive voltage, ' 0 ' for negative voltage,

Write CS,AJAX can also be using system;Using system. Data;Using system. configuration;Using system. Web;Using system. Web. Security;Using system. Web. UI;Using system. Web. UI. webcontrols;Using system. Web. UI. webcontrols. webparts;Using system. Web. UI. htmlcontrols;Using system. Data. sqlclient;/// /// Summary of provcityservstat/// This class is mainly used when the province/city/service station are all pulled into the judgment, the province and city teachers are both autopostback/// Public

Time (converted from timestamp to timestamp) Public class Date_U {/*** drop this method and enter the time to be converted, for example, ("June 14, 2014 seconds ") return timestamp ** @ param time * @ return */public String data (String time) {SimpleDateFormat sdr = new SimpleDateFormat ("MM minute ss seconds at HH on mm dd, yyyy", Locale. CHINA); Date date; String times = null; try {date = sdr. parse (time

=" Wkiol1ydhu-zieygaahnbmgpwka567.jpg "/>The ability to include "new", "edit", "delete", "detail" in this page is detailed in the following sectionsFinally, post the code in the Getmodel () method in the Dal:Get an Object entityPublic list{StringBuilder strSQL = new StringBuilder ();Strsql.append ("select");Strsql.append ("Id,deptnum,empname,empspell,empsex,empduty,empbirth,birthnote,emptel,empemail,empaddress, Empeduc,empnation,empcard,empsalary,empmark,opid,opt,epmphoto,datain ");Strsql.append

WHERE UnitNo LIKE '% {0} %' AND {1}", InputValue, Filter );If (Type. ToLower (). Equals ("pssale "))SQL = string. format (@ "select top 10 SaleID, UnitID, UnitNo, ContractNo, Name, SaleDate, sellinuplice, ProjectNo FROM View_PS_Sale_Unit WHERE UnitNo LIKE '% {0} %' AND {1 }", inputValue, Filter );Using (SqlDataReader sdr = DataAccessHelper. ExecuteReader (SQL) as SqlDataReader){If (sdr = null |!

WHERE UnitNo LIKE '% {0} %' AND {1}", InputValue, Filter );If (Type. ToLower (). Equals ("pssale "))SQL = string. format (@ "select top 10 SaleID, UnitID, UnitNo, ContractNo, Name, SaleDate, sellinuplice, ProjectNo FROM View_PS_Sale_Unit WHERE UnitNo LIKE '% {0} %' AND {1 }", inputValue, Filter );Using (SqlDataReader sdr = DataAccessHelper. ExecuteReader (SQL) as SqlDataReader){If (sdr = null |!

) TECoClass; MRender = (IRender5) TECoClass; MMenue = (IMenu) TECoClass; MObjectManager = (IObjectManager5) TECoClass; MInformationTee = (IInformationTree5) TECoClass; // Load the 3D ball MTerraExplorer. LoadEx (@ "C: \ globe. fly", "", "", 0); // or mpt file, which can be generated using Terrabuilder. There are two main ways to generate the Pipeline Code: 1. single pipe segment Int iGround = mInformationTee. CreateGroup ("Pipeline", 0 ); Double x1 = 0, y1 = 0, z1 = 0, x2, y2, z2; Double pip

"] = HT; } 4, in the Default.aspx to add a hyperlink, link to shopcart.aspx, in the shopcart.aspx display user purchase of merchandise information.Tips: A, the following variables are defined first in Shopcart: Hashtable HT; DataTable DT; String connstring=@ "Datasource=.\sqlexpress;initial catalog=test;integrated security=true"; SqlConnection Conn; SqlCommand cmd; SqlDataReader SDR; B, add a GridView to

{ ht.Add(id, 1); Session["shopcar"] = ht; } } } 4. Add a hyperlink to the Default. aspx file to link to shopcart. aspx. The shopcart. aspx file displays the product information you have purchased.Tip: A. Define the following variables in shopcart: Hashtable ht; DataTable dt; string connstring=@"DataSource=.\SQLEXPRESS;Initial Catalog=test;Integrated Security=True"; SqlConnection conn; SqlCommand cmd; SqlDataReader sdr